List of Sea Turtle Page 15

• Age 6～Age 65
• 4～5 hours
• 09:00

Snorkel surrounded by colorful coral reefs and schools of colorful fish at Yaebise, one of Japan's largest coral reef groups. You might even see sea turtles! The shallow sandy area at the resting point is a superb view! A very satisfying plan that you can also enjoy drone shooting! ★Flow of the tour★ 8:30 Meeting, reception, explanation (about 30 minutes) ↓Boat boarding 9:00 Departing from Tori River Marina ↓Moving by boat (boarding time about 30 minutes) 9:30 Yaebise snorkel first point ( Experience time about 40 minutes) ↓ Boat transfer (Boarding time about 10 minutes) 10:20 Yaebise snorkel 2nd point (Experience time about 40 minutes) ↓ Boat transfer (Boarding time about 10 minutes) 11:10 Shining emerald green Free time on shallow sand (about 60 minutes) ↓ Boat transfer (boarding time about 30 minutes) 12:50 Return to Tri River Marina 13:30 Dissolution after handing over photos and drone data

• For Rainy Days
• For Groups

• Age 6～Age 65
• 2～3 hours
• 13:00

This is a course for snorkeling in the Blue Cave and coral and sea turtles (^_^) We arrive at the point in about 5 minutes after departure, so it is recommended for those who are worried about seasickness and for beginners in snorkeling (^_^)! There are many beautiful corals, fish, and sea turtles at this point, so if you are lucky, you may even see a sea turtle! It is also recommended for those who want to enjoy it in a short time due to their travel schedule (^_^) We will provide thorough support even for first-timers, so please feel free to join us (^_^)

• For Rainy Days
• For Groups

• Age 3～Age 78
• 2～3 hours
• 09:00 / 14:00

It is a variety of experience tours on the pleasure boat of the Amami sightseeing cruise. We will go around the northern Amami Islands, Kotori beach and sea turtle spots while riding a towing tube. You can board from 3 years old to the elderly. Please be assured that the route may change in case of bad weather! Please enjoy the sea of Amami to the fullest ~ ♪

• Age 10～Age 59
• 3～4 hours
• 07:15 / 11:45

The Chibishi Islands is a general term for three uninhabited islands (Kamiyama Island, Nagannu Island, and Quefu Island) made of coral reefs located at the eastern end of the Kerama Islands. It takes about 20 minutes by boat from Naha. Coral reefs are lined up in the pure white sand, and you can play through the natural arches and tunnels created by the coral reefs. The transparency is high and there are many fish, so it is a great point to see. The Chibishi Islands are also a spawning ground for sea turtles and a regular resting point for sea turtles. If you are lucky, you can meet sea turtles ♡♡ Because it departs from the port in Naha city, you can dive in the morning and go sightseeing in Naha in the afternoon, or spend the morning relaxing at a hotel in Naha and dive in the afternoon. I can do it too! ! I want to dive in the sea, but I also want to play other things! If you go all the way to dive, you want to meet sea turtles with outstanding transparency! It is a perfect tour for those who say. Because it is a relatively calm point, there are courses that even those who have just acquired a license and blank divers can enjoy with peace of mind. Since it will be a boat tour, you can also enjoy cruising from the port to the point ♪ For those who have just acquired a license and those who have a blank diver, you can dive safely and enjoyably, including reviewing knowledge and how to dive. We will carefully explain and practice so that you can do it, and we will make a plan according to each pace. I will do my best to guide you so that your trip to Okinawa will be the best trip! ! [Caution] Please be sure to check. ① This plan is for two dives.・If you wish to do one dive, you will have to wait on board. (The price will be the same as 2 dives.) ②We will check the vacant seats on the boat after making a reservation.・Depending on the date and time, there may be no vacancies. ③ The ship may sway considerably while moving.・If you are prone to seasickness, please consult us in advance. ④ Depending on the sea conditions, it may not be possible to go to the Chibishi Islands.・It may be a point along the main island at the discretion of the captain on the day. ⑤ This plan is for diving license (C card) owners. If you do not have a license, please select the "Experience Diving" plan [Kerama Chibishi Islands Experience Diving] https://activityjapan.com/publish/plan/38144 We have many other plans available. ♪ [BeNatural handling plan list] https://activityjapan.com/publish/plan_list/5209

• For Rainy Days
• For Groups

• Age 10～Age 75
• 4～5 hours
• 08:00 / 13:30

★ Experience diving at Pono Pono is a complete small group system with plenty of peace of mind and satisfaction! One instructor per group! ★ The guide will take a picture of the diving, and it will be a free service! ★ Take a boat to sea turtles, manta rays, and phantom islands. Slow and leisurely diving with a completely small group of peace of mind! The phantom island heads for a time when there are as few people as possible. ～ Flow of the day ～ ①Meeting, filling out the application form, changing clothes 15 minutes ②Departure to the point, explanation 30 minutes ③Diving or snorkeling 60 minutes at the first place ④Diving or snorkeling 60 minutes at the second place ⑤To the phantom island 30 minutes to move ⑥ Phantom island relaxation time 30 minutes ⓻ Return to port 30 minutes

• Pickup Service

• Age 5～Age 70
• 4～5 hours
• 09:00

Snorkel surrounded by colorful coral reefs and schools of colorful fish at Yaebise, one of Japan's largest coral reef groups. You might even see sea turtles! The shallow sandy area at the resting point is a superb view! A very satisfying plan that you can also enjoy drone shooting! ★Flow of the tour★ 8:30 Meeting, reception, explanation (about 30 minutes) ↓Boat boarding 9:00 Departing from Tori River Marina ↓Moving by boat (boarding time about 30 minutes) 9:30 Yaebise snorkel first point ( Experience time about 40 minutes) ↓ Boat transfer (Boarding time about 10 minutes) 10:20 Yaebise snorkel 2nd point (Experience time about 40 minutes) ↓ Boat transfer (Boarding time about 10 minutes) 11:10 Shining emerald green Free time on shallow sand (about 60 minutes) ↓ Boat transfer (boarding time about 30 minutes) 12:50 Return to Tri River Marina 13:30 Dissolution after handing over photos and drone data

• For Groups

• Age 10～Age 100
• 2～3 hours
• 17:30

A former city life immigrant guide will tell you the charm of Ishigaki Island through SUP! Sunset SUP is centered on the beautiful beaches of Ishigaki Island, where the sun slowly sinks into the sea in front. (Detailed location will be decided the day before depending on the weather) After a 30-minute lecture on how to row and ride, head to the sea! Please enjoy a walk on the water for about 60 minutes. First of all, we will conduct a course, so even beginners can participate with confidence. Please spend a relaxing and relaxing time on the beach where sea turtles swim and the beautiful beach where you can clearly see the coral from the water. Of course, free transportation to your hotel is included. English available! The departure time for the sunset course varies depending on the season due to sunset time. Please contact us for more information.

• Pickup Service

• Age 10～Age 60
• Over 6 hours on the day
• 08:00

Cheap 2 dive plan at a reasonable price Snorkeling is also possible in free time Beginners, blank divers, even beginners are of course OK Kerama Islands is the world's top class transparency ♪ It's like a real experience Aquarium The sea of Kerama is transparent Not only the height but also the richness of the ecosystem is highly evaluated. A wide variety of corals are densely packed, and it is said that there are more 250 species of coral, and about 60% of Japanese corals Kerama Islands It is not uncommon to encounter the Snorkeling Kerama Islands which are also the spawning grounds for sea turtles, Diving If you are a big player, you can meet manta rays, barracudas, giant trevally, etc., and the Kerama Kerama Islands Okinawa, which was called "the sea where the world falls in love", should be visited once in a lifetime.

• Pickup Service
• For Rainy Days
• For Groups

• Age 7～Age 60
• 2～3 hours

[Enjoy the spectacular views of Miyakojima!] SUP & Snorkeling Tour | Private tour for one group | Beginners welcome | Free photo data included If you want to enjoy the beautiful sea of Miyakojima, this is it! A luxurious tour where you can enjoy SUP (stand up paddle board) and snorkeling together. Enjoy a leisurely cruise on a SUP through the crystal clear Miyako blue and the spectacular natural scenery♪ Snorkeling is an exciting experience where you can encounter colorful tropical fish, beautiful coral reefs, and cute sea turtles. The key is to look at the sea conditions of the day and guide you to the best place. Even beginners and those who are not good at swimming will be carefully lectured and supported, so you can enjoy it with peace of mind. Photos and videos taken during the tour will be given to you free of charge. It's perfect for creating memories of your trip♪

• Age 13～Age 75
• Within 1 hour
• 10:30 / 11:00 / 12:00 / 12:30 / 13:00 / 13:30 / 14:00 / 14:30 / 15:00 / 15:30

SUP has become popular in recent years! This is a SUP school for beginners. Our staff will give you a thorough lecture, so you can try it with confidence. While walking on the sea, you can admire the colorful fish, and if you're lucky, you might even meet a sea turtle! Enjoy a relaxing time on the beautiful sea of Ishigaki Island ♪ ~Experience flow~ ① Reception We will be waiting for you at the leisure house in front of Maesato Beach. Please come in clothes that you don't mind getting wet. (5 minutes) ② Briefing We will explain how to use the equipment. (5 minutes) ③ You will enter the sea with the SUP training and experience staff. (20 minutes) ④ Finish / Disband Thank you for your hard work!

• Age 6～Age 65
• Within 1 hour
• 10:00 / 11:00 / 12:00 / 13:00 / 14:00 / 15:00

This is a snorkeling tour at Maesato Beach in the southern part of Ishigaki Island. Since the entry is from the beach, it's okay even if you don't like boats! You can rent everything, so you can participate empty-handed. You may see colorful tropical fish such as the blue-striped damselfish and the blue-striped damselfish, and if you're lucky, you may even see a green sea turtle! ~Experience flow~ ① Fill out the paperwork and change clothes We will be waiting for you at the leisure house in front of Maesato Beach. Please wear your swimsuit. (10 minutes) ② Briefing The instructor will explain how to use the equipment in an easy-to-understand manner. (15 minutes) ③ Move to the beach and start snorkeling It's a short walk to the beach! Let's go and see the fish and coral! (40 minutes) ④ End, change clothes, and disband Welcome back! If you have any questions, please feel free to ask. Change clothes and disband. (10 minutes)

• Age 3～Age 65
• 1～2 hours
• 08:00 / 10:00 / 12:00 / 14:00 / 16:00

A completely private tour limited to one group in Miyakojima! We will deliver a luxurious space just for you. The guide will provide exclusive support, so even beginners can feel safe and secure! We also recommend participation with families♪ ~Experience flow~ (example) 8:00 Meet on site & meet the guide at the reception meeting place. After that, fill out a pledge form, etc. Equipment size adjustment. Explanation of the tour flow and precautions. 8:30 Move to the sea, after a lecture, head to the experience sea and receive a lecture on how to use the equipment, etc. Once you get used to it, swim with the sea turtles and fish to see them♪ We will take lots of photos!! 9:15 Return to the car and deliver the photos iPhone users only. Android users will deliver by contacting us on the same day 9:30 End & disband

• For Groups

• Age 3～Age 65
• 2～3 hours
• 09:00 / 13:00

This is a sea turtle snorkeling trip from Ishigaki Island's Blue Cave and beach. Let's go see the many fish and sea turtles living in deep and shallow areas. Our staff will provide you with detailed instruction, so beginners and children can join us with peace of mind.

• Pickup Service
• For Rainy Days
• For Groups

• Age 6～Age 65
• 1～2 hours
• 09:30 / 11:30 / 13:30

Snorkeling and marine jet experience in a floating fish tank offshore! In the fish tank, you will be greeted by cownose rays, sea turtles, and cute tropical fish! Before the menu experience, the instructor will give a thorough and thorough lecture, so even first-timers can participate with confidence. Since we offer a completely private tour for one group, you can enjoy it at your own pace. *Our staff will be piloting. Please note that we do not rent jet skis. The tour takes about 1 hour and 30 minutes! It takes less than half a day, so you can easily plan your trip by touring tourist spots before and after the menu experience! The Okinawa tourist attraction, Churaumi Aquarium, is nearby and is easily accessible♪ ~Schedule for the day~ [Time required: about 1 hour and 30 minutes] ●Meeting● Meet at the parking lot opposite Toguchi Port and Kaito no Eki Sakanakanasa ↓●Reception, payment, and change of clothes● ↓●Depart on a jet ski●We will travel to the point by jet ski. ↓ ●Training●You will be trained on how to use the equipment and how to swim on a raft adjacent to the fish tank. ↓ ●Snorkeling●Relaxed snorkeling in a circular fish tank♪ ↓●Marine jet experience●An exhilarating marine jet experience! ↓●Toguchi Port・Return to port● ↓●Shower・Change of clothes● ↓ ●Disbanding●☆Recommended points of Lana Marine m's☆●1 group completely reserved●You will not be with other customers! Because it is completely reserved, we can guide you at your own pace. Even if you are a first-timer, a small child, or someone who can't swim, you can participate with peace of mind as our experienced instructors will provide you with solid support. ●Free photos and videos●We will take pictures of you experiencing the menu with a GoPro and give you an edited video and selected photos for free! We will do our best to help you create wonderful memories of your trip to Okinawa ☆● Showers and changing rooms available● We use facilities that are fully equipped with parking, showers, toilets, and changing rooms, so you don't have to worry about getting changed before and after your menu♪● Experienced staff will guide you to the best spots● Our experienced staff, who have been guiding in the seas of Okinawa for many years, will select the best spots depending on the ocean conditions on the day.

• For Rainy Days

• Age 10～Age 49
• 1～2 hours
• 09:00 / 09:30 / 11:00 / 12:30 / 13:30 / 14:00 / 15:30 / 17:00

Recommended points for this plan!・No additional charge! Clear accounting ♪ Some shops charge additional boat boarding fees and tour photo fees if you choose based on the low price, but at our shop, equipment rental fees, boat boarding fees, photos, video shooting fees, etc. are included in the tour fee. All included.・Tours are easy to take on a boat, so it's easy for children and women♪Actually, if you don't want to ride a boat, you have to climb up and down over 80 steep stairs to enter the sea. However, if you plan to take a boat, you can enter the sea as soon as the boat arrives at the point without going up and down the stairs!・If you go by nice boat to the alternative point, if you can't go to the blue cave, you can guide you to the special coral and tropical fish point that can only be reached by boat. If you are lucky, you can meet sea turtles ♪・High safety boat plan In addition to the tour guide, the captain always waits on board and watches over the safety of the customer. If you get drunk or get scared, you can return to the boat immediately, so you can rest assured.

• For Rainy Days
• For Groups

• Age 6～Age 59
• 1～2 hours
• 09:00 / 09:30 / 11:00 / 12:30 / 13:30 / 14:00 / 15:30 / 17:00

Recommended points for this plan!・No additional charge! Clear accounting ♪ Some shops charge additional boat boarding fees and tour photo fees if you choose based on the low price, but at our shop, equipment rental fees, boat boarding fees, photos, video shooting fees, etc. are included in the tour fee. All included.・Tours are easy to take on a boat, so it's easy for children and women♪Actually, if you don't want to ride a boat, you have to climb up and down over 80 steep stairs to enter the sea. However, if you plan to take a boat, you can enter the sea as soon as the boat arrives at the point without going up and down the stairs!・If you go by nice boat to the alternative point, if you can't go to the blue cave, you can guide you to the special coral and tropical fish point that can only be reached by boat. If you are lucky, you can meet sea turtles ♪・High safety boat plan In addition to the tour guide, the captain always waits on board and watches over the safety of the customer. If you get drunk or get scared, you can return to the boat immediately, so you can rest assured.

• For Rainy Days
• For Groups

• Age 6～Age 60
• 4～5 hours
• 12:00

PM only Half day boat snorkeling Snorkeling with sea turtles in the Yaeyama Islands. Course contents ☆ From 12:00 to 16:00 Departure to the sea turtle point by boat. Snorkel equipment set, photos, videos, sister store drinks (Island Gallery) [Ishigaki Island] [Ishigaki] [Marine] [Snorkel] [Snorkeling] [Ocean] [Instagrammable] [Beginner] [Beginner] [Boat] [Free] [Couple] [Family] [Family] [Single] [Islander]

• For Rainy Days

• Age 5～Age 70
• 1～2 hours

We will show you the best spots to see beautiful tropical fish!! Our instructors will give you easy-to-understand lectures, so even beginners can feel at ease. Please let us know which beaches you would like to visit!! We will show you your favorite places. A beautiful, crystal clear world spreads out in the sea. Swim with lots of fish! If you're lucky, you may even see sea turtles!

• For Groups

• Age 10～Age 100
• 3～4 hours
• 14:00

A former city life immigrant guide will tell you the charm of Ishigaki Island through SUP! Dynamic Nature SUP is centered on the beautiful beaches of Ishigaki Island, where you can feel more magnificent nature. (Detailed location will be decided the day before depending on the weather) After a 30-minute lecture on how to row and ride, head to the sea! Please enjoy the water walk for about 90 minutes. First of all, we will conduct a course, so even beginners can participate with confidence. Please spend a relaxing and relaxing time on the beach where sea turtles swim and the beautiful beach where you can clearly see the coral from the water. Of course, free transportation to your hotel is included. English available! The afternoon course departs from the hotel at 13:00 (local gathering at 13:30) and arrives at the hotel at 16:30 (local dissolution at 16:00).

• Pickup Service

• Age 10～Age 100
• 3～4 hours
• 09:00

A former city life immigrant guide will tell you the charm of Ishigaki Island through SUP! Dynamic Nature SUP is centered on the beautiful beaches of Ishigaki Island, where you can feel more magnificent nature. (Detailed location will be decided the day before depending on the weather) After a 30-minute lecture on how to row and ride, head to the sea! Please enjoy the water walk for about 90 minutes. First of all, we will conduct a course, so even beginners can participate with confidence. Please spend a relaxing and relaxing time on the beach where sea turtles swim and the beautiful beach where you can clearly see the coral from the water. Of course, free transportation to your hotel is included. English available! The morning course departs from the hotel at 8:00 (the local meeting is at 8:30) and arrives at the hotel at 11:30 (the local dissolution is at 11:00).

• Pickup Service

• Age 10～Age 75
• 3～4 hours
• 08:30 / 13:30

★ Experience diving at Pono Pono is a complete small group system with plenty of peace of mind and satisfaction! Limited to one group for each tour! ★ Take a picture of the diving with a guide camera and get a free gift! ★ It will be a beach entry without boat sickness. Travel by car to the best beach of the day! Head to the coral and sea turtle points. ★ Enjoy slowly and with a sense of security ~ Flow of the day ~ ① Meeting, filling out the application form 5 minutes ② Diving explanation, changing clothes 40 minutes ③ 30 minutes by car to the beach ④ 60 minutes diving at the best beach of the day ⑤ Shop by car 30 minutes ⑥ If you wish, shower at the shop 30 minutes ⓻ Dissolution

• Pickup Service

• Age 6～Age 70
• 3～4 hours
• 09:00 / 13:30

I don't want to pay attention to other customers! I want to rent a guide as a couple! I want to make a fuss with my friends! I want the guide to take many photos! It is a recommended plan for such people. The beautiful cove in front of the shop is perfect for sap cruises because it is not affected by the wind! After the cruise, take a yoga pose, pull a tug of war, and jump rope! ♪ In the snorkel tour, a guide who loves the sea will guide you to the best point Miyakojima Guide to the main island in the best point! 2000 yen Change to a turtle exploration tour with the addition of ★ 40 to 100 photo data, free gift ★ ★ Please see sea_aid's Instagram ★ ~On the day Flow-① Meeting and tea party: 15 minutes On the day Weather and sea conditions Explanations ②Change of clothes: 5 minutes ③Snorkel: 50 minutes ④Sap play: 90 minutes ★ Drone shooting: 20 minutes ★ Free for now! ⑤Change of clothes: 10 minutes

• Date Spot
• For Rainy Days

• Age 5～Age 100
• 5～6 hours

Latest fly board and adult care of sea turtles snorkel! A luxurious set course where you can experience both! ! Enjoy the latest flyboard for 120 minutes! Recommended for greedy you! It saves you from having to go to remote islands and Kerama to see sea turtles. Even those who are not good at ships are OK! ! Let's swim with sea turtles in the coral flower field about 5 minutes on the board! ※ Sea turtle snorkel tour is high encounter rate! ! Depending on the sea conditions, you may not be able to encounter sea turtles. Points may be changed depending on the marine situation after. In that case, please forgive.

• For Groups

• Age 10～Age 100
• 2～3 hours

What is Kimmochi Okinawa Not well known for being located on the Pacific side of central Japan Diving spot. Okinawa Not to mention the distinctive beautiful tropical fish flocks and coral reefs, Okinawa The probability of encountering sea turtles on the main island is high. It is also a valuable place to encounter Nemlibka (sleeping sharks). New Okinawa of Diving Let's make a moving experience at the spot!

• For Groups

• Age 10～
• 5～6 hours

Marine play equipment at Okinawa Parasailing, adult-minded sea turtle experience Diving! ! Okinawa Let's play the whole day with the strongest set plan! ! Take a walk in the air from Okinawa from 100m above the sea at Parasailing! Enjoy the latest flyboat flying up in the sky with Jet ski playground equipment and enjoy a banana boat at Wakeboarding! adult Experience to see the sea turtles up close Diving! It is the strongest plan that you can enjoy the sea in the sky and under the sea and this more not Okinawa. ※ Sea turtle experience Diving tour high encounter rate! ! Depending on the sea conditions, you may not be able to encounter sea turtles. Points may be changed depending on the marine situation after. In that case, please forgive.

• For Groups

• Age 10～
• 5～6 hours

Let's look at the beautiful sea from the sky in Okinawa Uruma City! Soaring into the sky with a parachute on the back, the magnificent scenery will spread below your eyes! The superb contrast between the sky and the sea can be astonishing and impressive only with Parasailing! ! It saves you from having to go to remote islands and Kerama to see sea turtles. Even those who are not good at ships are OK! ! Let's swim with sea turtles in the coral flower field about 5 minutes on the board! ※ Sea turtle experience Diving tour is high encounter rate! ! Depending on the sea conditions, you may not be able to encounter sea turtles. Points may be changed depending on the marine situation after. In that case, please forgive.

• For Groups

• Age 10～
• 5～6 hours

An all-you-can-eat course to enjoy the latest flyboard and Jet ski and adult sea turtle experience Diving! A luxurious set course where you can experience both! Wakeboarding, banana boats, and the latest flyboards are everything you want to play, so you can enjoy them for 120 minutes! Recommended for greedy you! It saves you from having to go to remote islands and Kerama to see sea turtles. Even those who are not good at ships are OK! ! Let's swim with sea turtles in the coral flower field about 5 minutes on the board! * Sea turtle experience Diving tour has a high encounter rate! ! Depending on the sea conditions, you may not be able to encounter sea turtles. Points may be changed depending on the marine situation after. In that case, please forgive.

• For Groups

• Age 10～
• 5～6 hours

Latest fly board and adult sea turtles experience of the gas-Diving! A luxurious set course where you can experience both! ! Enjoy the latest flyboard for 120 minutes! Recommended for greedy you! It saves you from having to go to remote islands and Kerama to see sea turtles. Even those who are not good at ships are OK! ! Let's swim with sea turtles in the coral flower field about 5 minutes on the board! ※ Sea turtle experience Diving tour is high encounter rate! ! Depending on the sea conditions, you may not be able to encounter sea turtles. Points may be changed depending on the marine situation after. In that case, please forgive.

• For Groups

• Age 10～
• 5～6 hours

Jet ski play unlimited courses and enjoy the adult sea turtles experience of the gas-Diving! A luxurious set course where you can experience both! ! Wakeboarding, banana boats, and the latest play equipment that you've always wanted to play are available, so you can enjoy them for 120 minutes! Recommended for greedy you! It saves you from having to go to remote islands and Kerama to see sea turtles. Even those who are not good at ships are OK! ! Let's swim with sea turtles in the coral flower field about 5 minutes on the board! ※ Sea turtle experience Diving tour is high encounter rate! ! Depending on the sea conditions, you may not be able to encounter sea turtles. Points may be changed depending on the marine situation after. In that case, please forgive.

• For Groups

• Age 5～
• 5～6 hours

Marine playground equipment at Okinawa Parasailing, adult-minded sea turtle snorkel! ! Okinawa Let's play the whole day with the strongest set plan! ! Aerial walk from Okinawa at 100m above the sea at Parasailing! Enjoy the latest flyboat flying up in the sky with Jet ski playground equipment and enjoy a banana boat at Wakeboarding! adult Snorkel where you can see sea turtles up close! It is the strongest plan that you can enjoy the sea in the sky and the sea under the sea and this more not Okinawa. ※ Sea turtle snorkel tour is high encounter rate! ! Depending on the sea conditions, you may not be able to encounter sea turtles. Points may be changed depending on the marine situation after. In that case, please forgive.

• For Groups