Water sports (river / lake activities) in Japan Page 17

• Age 6～Age 70
• 2～3 hours
• 10:00 / 13:00 / 16:00

Beginners are welcome to experience this SUP tour in the beautiful Sea of Japan in Shimonoseki, Yamaguchi Prefecture, the westernmost point of Honshu. The area is Ogushi Beach, a great spot for the beautiful sea with Atsushi Island in the background and the sunset setting on the horizon, and for experienced people there is also an exploration cruise to the sea cave "Okudani Bat Cave", where long-fingered bats live. A full set of SUP equipment will be provided. All you need to do is wear clothes that you don't mind getting wet. You will be instructed by an SIJ (Student Association of Japan) certified instructor, so even beginners can have a safe and secure SUP experience.

• Age 0～Age 100
• 1～2 hours
• 08:00 / 09:00 / 10:00 / 11:00 / 12:00 / 13:00 / 14:00 / 15:00

Experience canoeing with your dog at the foot of Mt. Fuji ♪ Why don't you spend a different time with your important “family”? This is a private lesson where the instructor gives a lecture carefully, so even the first person or first-time dog is safe. <Contents> About 1 hour lecture + 3 hours free time

• Pickup Service
• For Rainy Days
• For Groups
• For Family

• Age 7～Age 100
• Within 1 hour
• 08:30 / 09:00 / 15:30 / 16:00 / 17:30 / 18:00

If you want to look at the views of the surrounding from Kawaguchiko riding a canoe, it is I have no self-confidence of paddling on your own such as those who want to ride in the canoe the target.

• Pickup Service
• For Rainy Days

• Age 6～Age 70
• 2～3 hours
• 05:00 / 16:00 / 19:00

If necessary, we can introduce you to a restaurant that will cook the fish you caught!! You can enjoy it after catching it!! We are available 24 hours a day. If you have a preferred departure time, please fill it in when you make a reservation. *The facility is locked and only authorized personnel are allowed inside, so it is a private space!

• For Rainy Days

• Age 6～Age 100
• Within 1 hour /1～2 hours /2～3 hours /3～4 hours
• 09:00 / 10:00 / 11:00 / 13:00 / 14:00 / 15:00 / 16:00

You can choose the wakeboard and your favorite course. There are various contents, 1 towing, a course that you can not return without slipping, a satisfaction course (2 towing), and an athlete type. From beginners to advanced users, you can choose according to each level. Feel free to join us empty-handed.

• For Groups

• Age 9～Age 100
• 2～3 hours
• 09:00 / 13:15 / 15:15

What is a Ducky Tour? The Tama River Ducky Tour is a thrilling river boat ride that two people can join together to enjoy. A Ducky is a two-seater inflatable rubber boat shaped like a kayak. It is stable and absorbs shocks well. Rafting where you row together is fun, but this tour is recommended for those who want to try going down the river with just two people! You'll be closer to the water's surface, feel the power of the water current directly, and enjoy the Tama River in a more thrilling way. ★You'll receive instructions on how to row and safety instructions, and practice before starting the tour. Don't worry, your guide will support you throughout the tour. Eligibility to participate: 4th grade and above welcome. Friends, family, and couples are all welcome! What to bring: Swimsuit (synthetic underwear for wetsuits is OK) Bath towel Water shoes (rentals available) Glasses bands for those who wear glasses (also available for purchase) Meeting time: Varies depending on the season <3/1-7/18 9/24-11/30> 9:00 13:15 <7/19-9/23> 15:15 Sample schedule: If starting at <9:00> Check-in/changing clothes 9:00- 9:30 Movement/safety briefing 9:30-10:00 Tour 10:00-11:30 Changing clothes/disbanding 11:30-12:00 *Times are approximate. BBQ option: [Reservations accepted for 4 or more people] You can also have a BBQ after the tour! (About 3 hours after the tour)◇Reservation conditions・Please make a reservation for 4 people or more◇Set contents・Table・Chairs・Stove (iron plate, net, etc.)・Tableware (plates, chopsticks, towels, tongs, etc.)・Fire starter (fire tongs, charcoal, fire starter, etc.)・Cooler bag・Food (meat, vegetables, yakisoba, etc.)※Drinks are not included. You can purchase them at River Base or nearby convenience stores.

• Date Spot
• For Rainy Days
• For Groups

• Age 6～Age 60
• Within 1 hour
• 09:00 / 11:00 / 13:00 / 14:00 / 15:00

Classic activity! ! If you came to Lake Yamanaka, you must play on the lake absolutely! Please enjoy a lot in Mt. Fuji seen from the lake, lakes springing from the base of Fuji, Lake Yamanaka!

• For Rainy Days
• For Groups

• Age 5～Age 80
• 1～2 hours
• 10:00 / 11:30 / 13:30 / 15:00

Kayaking is the only place where you can play in the water with a different perspective than when swimming! It is a plan that allows a wide range of people to experience a lot of such extraordinary things with peace of mind. It doesn't matter if you are a complete beginner. Please be assured that the instructor will carefully support you. ◎There are clean locker rooms and shower rooms◎◎You can enjoy the facility's outdoor pool at any time before or after the experience (summer only)♪◎The experience fee includes facility usage fees, parking fees, etc., so no additional fees are required. !

• For Rainy Days
• For Groups
• Spring Campaign Sale 2025

• Age 3～Age 70
• 1～2 hours
• 08:30 / 12:00 / 15:00

Spectacular panoramic SUP cruising at Lake Kussharo, Japan's largest caldera lake! When you look into the water from the top of the SUP, you can see the lake bottom and the fish, and enjoy the natural topography and scenery. Also, while cruising along the lake shore, you may encounter small animals such as Ezo squirrels! Surrounded by nature with a 360° view, you are sure to enjoy SUP while feeling a sense of unity with nature! Take this opportunity to have an extraordinary experience with SUP! The supported languages ​​are Japanese and English. ~Flow of the experience~ ① Reception/Change of clothes After receiving the reception, you will change your clothes. If you arrive after changing your clothes, you will be able to enter the tour smoothly. ②We will explain the flow of the tour, including safety explanations, lecture notes, and course information. The instructor will teach you how to ride and row a SUP. We will explain what to do if you fall off the board and important information to protect your own safety. ③ Tour Start On land, we will explain the equipment and the basics of paddling. After that, we started with a lecture on paddling while sitting on the board (or kneeling). Once you get used to it, stand on the board and row. ④ End of tour - Change of clothes You will be asked to return the equipment and change your clothes. The tour ends by handing over the photo data (free of charge) taken during the tour.

• For Rainy Days

• Age 0～Age 100
• 1～2 hours
• 08:00 / 09:00 / 10:00 / 11:00 / 12:00 / 13:00 / 14:00 / 15:00 / 16:00

Easy course which reciprocates the Kushiro River from the campsite. Recommended and beginners to where I am know the joy of the canoe, for those who want to easily experience the canoe. About 60 minutes, why not touch the pleasure of the canoe. After the tour, you can enjoy BBQ in option! ! (■ dog can participate plan ♪)

• With Pets
• For Groups
• For Family

• Age 6～Age 75
• 2～3 hours
• 08:00 / 09:00 / 14:00 / 15:00

This course includes a lecture on the experience (plus) paddle form instruction, quick turn practice, how to paddle faster, ocean conditions, wind conditions, and slope conditions. We will also teach you self-rescue (crisis management and escape methods when doing SUP) and other various curriculums, and we will teach you in a full 2.5 hours. This is a course with breaks in between, so you can acquire basic knowledge and skills. Of course, you can take this course first, not from our 120-minute course, and try your first SUP challenge. This course is recommended for those who want to rent SUP overseas or at other resorts and enjoy it. Recommended for those who want to improve their SUP skills. After the school, you will step up to a level where you can enjoy SUP by yourself with confidence.

• For Rainy Days
• For Groups

• Age 13～Age 59
• 1～2 hours
• 08:00 / 10:00 / 12:00 / 14:00 / 16:00

At our shop, we want you to feel the beautiful sea of ​​Okinawa "even more"! With that in mind, Clear SUP Board & Clear Kayak will conduct all clear tours. With Clear SUP Clear Kayak... ☆ Beautiful sea ☆ ☆ Colorful fish and coral reefs ☆ You can see them through the transparent board and the kayak ♪ In addition, drone photography is also a free service! This plan is perfect for customers who want to take photos and videos of their memories on social media. Customers who have participated have said that it was a lifelong memory! Even beginners who have never done it before will be relieved as our staff will carefully explain it to you in the first lecture. ~~ ... Therefore, please cooperate as the meeting place may change depending on ocean conditions, etc. (final decision made the day before) <Meeting place> Experience location ① (resistant to southerly to westerly winds) 496 Serakaki, Onna Village, Okinawa Prefecture, 904-0404 *For an easier search, search for SALTY BEACH CLUB. <Meeting place> Experience location ② (resistant to northerly winds) 5232 Sakimotobu, Motobu Town, Kunigami District, Okinawa Prefecture, 905-0225 Gorilla Chop (Sakimotobu Green Park) Parking lot *For an easier search, search for Sakimotobu Green Park or Gorilla Chop. ~~ ...

• For Groups

• Age 3～Age 100
• 1～2 hours
• 09:00 / 10:00 / 11:00 / 13:00 / 14:00 / 15:00

★This is a great value set plan that includes (one of parasailing, flyboard, hoverboard) and Active 2 (banana boat & marble). [Active 2] (Banana Boat & Marble) Time required: 20 minutes Location: Heapy Beach Happiness Marine Club 10 minutes from Ginoza Interchange. 30 minutes from Kanucha. *At Happiness Marine Club, a facility usage fee of 300 yen (hot shower, parking lot) will be charged, so please pay on site. A 2-piece marine sports set that includes the banana boat, which is a standard marine sports menu, and the thrilling marble (for those who are scared, spin it slowly♪). We will give you the data of the photos taken with Active 2 for free. [Parasailing] Duration: 60 minutes Location: Kanucha Resort, Nago City The rope length is 150 meters and the height is approximately 60 meters. You can fully enjoy the entrance to Yanbaru National Park, a magnificent world heritage site. You can also use the facilities such as parking, pool, showers, and changing rooms for free. After enjoying the sea parasailing, please spend some relaxing time in the pool ♪ *Participation criteria: Persons weighing 21 kg or more [Flyboard] Time required: 20 minutes Location: Kanucha Resort, Nago City Using the power of watercraft A new type of marine sport where you can take off into the air.It will be held at a pier, so even beginners can feel free to participate. You can also take pictures from the pier! [Hoverboard] Time required: 20 minutes Location: Kanucha Resort, Nago City It's like a flying snowboard ♪ Marine sports using jet jets (^^ ♪ Feel free to enjoy it whether you are good at side riding or not ! [Time schedule] *Example 1 9:00 parasail start (Kanucha) → 10:00 end → 10:20 move to Happiness Marine → 10:50 arrival → 11:00 active 2 start → 11:20 end (Heapy Beach Please enjoy swimming in the sea♪) *Example 2 9:00 Start of Active 2 at Happiness Marine → End at 9:20 → Move to Kanucha Resort → 10:10 Arrive → 11:00 Parasail start → 12: Ends at 00:00 (Enjoy swimming in the pool and beach at Kanucha Resort♪) *Reservations for set menus are generally accepted until 5:00 pm two days in advance, but reservations can be made if there is space. P Beach Happiness Marine Club] Address 1048-2 Matsuda, Ginoza-mura, Kunigami-gun, 904-1301 Tel 090-3016-2723 [Kanucha Bay Resort] Address 156-2 Abe, Nago City, 905-2263 Kanucha Resort Reception location Beachside Cafe Lanai tel 080-6499-7786★We are giving away a 500 yen discount ticket for the buggy tour and zip line that can be used at the popular Yanbaruncha♪ Don't miss this opportunity♪

• For Groups

• Age 3～Age 100
• 1～2 hours
• 09:00 / 10:00 / 11:00 / 13:00 / 14:00 / 15:00

★This is a great value set plan that includes a banana boat (one of the following: parasailing, flyboard, or hoverboard). *This menu can only be paid for on-site (cash or credit card). [Banana boat] Duration: 10 minutes Location: Heeppy Beach, Happiness Marine Club 10 minutes from Ginoza Interchange. 30 minutes from Kanucha. *Happiness Marine Club charges a facility fee of 300 yen (hot shower, parking), so please pay on-site. Banana boat, a standard marine sports menu. Enjoy it with your family and friends. Photos taken on the banana boat will be given to you for free. [Parasailing] Duration: 60 minutes Location: Kanucha Resort, Nago City The rope is 150m long and rises to a height of about 60 meters. You can enjoy the majestic World Heritage Site, the entrance to Yanbaru National Park. You can also use the parking lot, pool, showers, changing rooms, and other facilities for free. After enjoying the ocean with parasailing, please spend some relaxing time in the pool♪ *Participation criteria / People weighing 21kg or more [Flyboard] Duration: 20 minutes Location: Kanucha Resort, Nago City A new type of marine sport that uses the power of a jet ski to fly into the air♪ Since it is held at the pier, beginners can feel free to participate. Your companions can also take great photos from the pier! [Hoverboard] Duration: 20 minutes Location: Kanucha Resort, Nago City It's like a flying snowboard♪ Marine sports that use jet propulsion (^^♪ Whether you are good at side-riding or not, you can enjoy it! [Time schedule] *Example 1 9:00 Parasail start (Kanucha) → 10:00 Finish → 10:20 Move to Happiness Marine → 10:50 Arrive → 11:00 Banana boat start → 11:10 Finish (Enjoy swimming at Heeppy Beach♪) *Example 2 Banana boat ride starts at Happiness Marine at 9:00 → ends at 9:10 → moves to Kanucha Resort at 9:30 → arrives at 10:00 → starts parasail at 11:00 → ends at 12:00 (Enjoy swimming in the pool or beach at Kanucha Resort♪) *Reservations for set menus are generally accepted until 5:00 p.m. two days before, but reservations can be made if there are openings. [Heapy Beach Happiness Marine Club] Address: 1048-2 Matsuda, Ginoza Village, Kunigami District, 904-1301 Tel: 090-3016-2723 [Kanucha Bay Resort] Address: 156-2 Abe, Nago City, 905-2263 Kanucha Resort Reception: Beachside Cafe Lanai Tel: 080-6499-7786 ★Get a 500 yen discount coupon for the buggy tour and zip line that can be used at the now popular Yanbaru Launcher♪Take advantage of this opportunity♪

• For Groups

• Age 3～Age 65
• 1～2 hours
• 09:00 / 10:00 / 11:00 / 13:00 / 14:00 / 15:00

★This is a great set plan that includes (one of parasailing, flyboard, hoverboard) and Active 3 (banana boat & marble & G force). [Active 3] (Banana Boat & Marble & G Force) Time required: 30 minutes Location: Heapy Beach Happiness Marine Club 10 minutes from Ginoza Interchange. 30 minutes from Kanucha. *At Happiness, a facility usage fee of 300 yen (hot shower, parking lot) will be charged, so please pay on-site. This 3-piece marine sports set includes the banana boat, a standard marine sports menu, the thrilling marble boat (if you're scared, turn slowly), and the G-force that allows you to ride face down and feel the lateral G force. We will give you the data of the photos taken with Active 3 for free. [Parasail] Time required: 60 minutes Flight time: 10 minutes Location: Kanucha Resort, Nago City Rope length: 150 meters, height: approximately 60 meters. You can fully enjoy the entrance to Yanbaru National Park, a magnificent world heritage site. You can also use the facilities such as parking, pool, showers, and changing rooms for free. After enjoying the sea parasailing, please spend some relaxing time in the pool ♪ *Participation criteria: Persons weighing 21 kg or more [Flyboard] Time required: 20 minutes Location: Kanucha Resort, Nago City Using the power of watercraft A new type of marine sport where you can take off into the air.It will be held at a pier, so even beginners can feel free to participate. You can also take pictures from the pier! [Hoverboard] Time required: 20 minutes Location: Kanucha Resort, Nago City It's like a flying snowboard ♪ Marine sports using jet jets (^^ ♪ Feel free to enjoy it whether you are good at side riding or not ! [Time schedule] *Example 1 9:00 parasail start (Kanucha) → 10:00 end → 10:20 move to Happiness Marine → 10:50 arrival → 11:00 active 3 start → 11:30 end (Heapy Beach Please enjoy swimming in the sea♪) *Example 2 9:00 Start of Active 2 at Happiness Marine → End at 9:30 → Move to Kanucha Resort → 10:20 Arrival → 11:00 Start of parasail → 12: Ends at 00:00 (Enjoy swimming in the pool and beach at Kanucha Resort♪) *Reservations for set menus are generally accepted until 5:00 pm two days in advance, but reservations can be made if there are spaces available. P Beach Happiness Marine Club] Address 1048-2 Matsuda, Ginoza-mura, Kunigami-gun, 904-1301 Tel 090-3016-2723 [Kanucha Bay Resort] Address 156-2 Abe, Nago City, 905-2263 Kanucha Resort Reception location Beachside Cafe Lanai tel 080-6499-7786

• For Groups

• Age 1～Age 65
• 1～2 hours
• 17:00 / 18:00

A small-group private tour in Miyakojima that is completely reserved for you! We will provide you with a luxurious space just for you. The guide will provide you with exclusive support, so even beginners can feel safe and secure! If you participate as a couple, you will receive a 1,000 yen cashback from the tour fee♪ ~Experience flow~ (example) 18:00 (summer) / 17:00 (winter) *The event time varies depending on the season. Meeting & Reception Meet with the guide, fill out a vow, etc., and receive an explanation of how to use the equipment 18:30 (summer) / 17:30 (winter) SUP experience Watch the sunrise rising from the horizon while riding a SUP 19:30 (summer) / 18:30 (winter) End & disbandment Photos will be given to you on the spot!

• Age 3～Age 80
• 1～2 hours /2～3 hours
• 10:00 / 12:00 / 14:00 / 16:00

Playing in the water in the great outdoors. Children can practice fluttering with their feet in the water, or start by getting used to the water. As you get used to it, you will gradually face your father and mother and play a rock-paper-scissors game while balancing, lie down on the board, throw a ball, and do various programs according to each pace. ～ Flow of the day ～ ① Reception, facility information, explanation for safety on the water 10 minutes ② Change of clothes 10 minutes ③ Explanation of flow and precautions before playing SUP 5 minutes ④ SUP play 50 minutes

• Age 0～Age 100
• 1～2 hours
• 10:00 / 13:00 / 15:30

This is a beginner's course. After briefing and practice, you will ride with an instructor. In this plan we provide a two-seat boat for 2 participants.​ ​​ ​ ※After having a trial course you may join a step-up course to ride a one-seat boat.

• Pickup Service
• For Rainy Days
• For Groups
• For Family

• Age 7～Age 100
• 1～2 hours
• 09:00 / 11:00 / 13:00 / 15:00 / 17:00

You can enjoy clear canoeing on the rocks and white sandy beaches that are eroded by waves, and Urato Beach, which boasts the highest degree of transparency in Honshu. Enter the sea caves, go through the rocks and between the rocks. When there is a wave, you can play with adventure. Enter the sea caves, go through the rocks and between the rocks, Year Sun We will experience the most beautiful Uratomi Undersea Park on the San-in Coast certified as this Geopark. ※ This plan is for up to 5 participants. A guide will accompany you.

• Pickup Service

• Age 6～Age 70
• 1～2 hours
• 10:00 / 13:00 / 15:00

From children who are not good at the sea adult A place where you can easily enjoy marine sports, Nishiura, a city of paddle sports. Besides the SUP tour, now Year Is tandem (two-seater)Sea kayak And introduced a plan that allows you to enjoy Nishiura's ocean more safely! The first lecture will be held in Nishiura Marina Port, which is less affected by waves, so it is safe for children. ~On the day Flow of ~ ① Acceptance & change of clothes (15 minutes) ②In Nishiura Marina Port Kayak Lecture (15 minutes) ③ Go outside the port as you get used to it! To nearby beach Cruising(Half an hour) ④ When you arrive at your destination, take a break and have a bathing time (20 minutes) ⑤Returning to the port while being pushed by the wind (30 minutes) ⑥ After changing clothes, settle and dissolve (10 minutes) ⑦ Relax time at 1963 OceanLaunge etc. (extra charge)

• For Rainy Days

• Age 3～Age 80
• 2～3 hours
• 09:00 / 12:00 / 15:00

About 4km of "Bibigawa" canoe down to the vicinity of Lake Utonai! Lake Utonai, which is famous as one of the best bird watching points in Japan, is a "sanctuary of wild birds" where you can see more than 260 species of wild birds such as migratory birds throughout the year. This plan is the only one that canoe to the vicinity of Lake Utonai!

• Pickup Service
• With Pets
• For Rainy Days
• For Groups

• Age 6～Age 100
• Within 1 hour /1～2 hours /2～3 hours /3～4 hours
• 09:00 / 10:00 / 11:00 / 13:00 / 14:00 / 15:00 / 16:00

Water skiing, you can choose your favorite course. There are various contents, 1 towing, a course that you can not return without slipping, a satisfaction course (2 towing), and an athlete type. From beginners to advanced users, you can choose according to each level. Feel free to join us empty-handed.

• For Groups

• Age 5～Age 100
• 1～2 hours
• 09:30 / 12:30 / 15:00

【Kushiro Wetland Canoe Private Tour Lake Toruji ~ Hosooka Course (Duration: about 120 minutes)】 ■ Enjoy the Kushiro Marshland with a private canoe tour! From the largest lake in Kushiro Wetland, go through the Akinawa River, a tributary of the Kushiro River, from Toroji Lake to the Kushiro River. Leave yourself in a slow flow, to the heart of the Kushiro Wetland. Why do not you experience birds singing and whispering of the wind in the middle of nature? Sometimes Ezoshima and Red crown may show us your face. Come and join us! The area around Toroji is a natural rich area even in Kushiro Marsh. The Salvo Observatory, about 1 km from Toroji Station, has panoramic view of Lake Toruji and other lakes and squares, and at the entrance of Kotaro Marsh, there is a Nihonmatsu Observation Area where you can see the Kushiro River and Kushiro Wetland and the Kushiro city area. In addition, there are plenty of places of interest such as Kotaro Marshland Observation Deck. Why do not you take a short walk on foot or by bicycle by all means. Anyway, it is best to look slowly and feel the five senses slowly as time permits.

• Pickup Service
• With Pets
• For Groups

• Age 6～Age 70
• Within 1 hour
• 10:45 / 13:30 / 15:30

"SUP" is an abbreviation for Stand Up Paddleboard. It is a new marine sport where you stand on a special board and paddle across the water. It is gaining popularity due to its ease and as an activity that allows even people with little experience in marine sports to enjoy nature. It is a marine sport that is currently attracting attention, offering a new experience like walking on a lake.

• For Groups

• Age 11～Age 70
• 1～2 hours
• 10:45 / 13:30 / 15:30

"SUP" is an abbreviation for Stand Up Paddleboard. It is a new marine sport where you stand on a special board and paddle across the water. It is gaining popularity due to its simplicity and the fact that even people with little experience in marine sports can enjoy nature as an activity. It is a marine sport that is currently attracting attention as it offers a new experience like walking on the lake. ~Schedule for the day~10:30 Check-in10:45 Lecture on land11:00 Start of practice on the lake11:15 Depart for Kamogawa12:15 Return to the campsite

• For Groups

• Age 6～Age 70
• 1～2 hours
• 13:00 / 15:00

"Wingfoil" is a new sport that has only just been released to the world. You run using inflatable wings. The underwater foil floats above the water, accelerating you and entering an unexplored zone. *This course can be booked by those who have completed Wingsup School, experienced towing foils, or experienced people and those who have purchased equipment.

• For Groups

• Age 6～Age 70
• Within 1 hour
• 13:15 / 14:15 / 15:15

"Wingfoil" is a new sport that has only just been released. You run using inflatable wings. The underwater foil floats above the water, allowing you to accelerate even further and enter an uncharted territory.

• For Groups

• Age 6～Age 70
• 1～2 hours
• 13:00 / 15:00

"Wingfoil" is a new sport that has only just been released. You run using inflatable wings. The underwater foil floats above the water, allowing you to accelerate even further and enter an uncharted territory.

• For Groups

• Age 6～Age 70
• Within 1 hour
• 10:45 / 13:30 / 15:30

At our kayaking school, anyone can easily, safely and enjoyably experience kayaking. Come enjoy the great outdoors with your family and friends! You're sure to feel refreshed both physically and mentally!

• For Groups

• Age 6～Age 70
• 1～2 hours
• 10:45 / 13:30 / 15:30

At the Kayak School, everyone can easily, safely and enjoyably experience kayaking. Enjoy the great outdoors with your family and friends! You're sure to feel refreshed both physically and mentally! ~Schedule~10:30 Check-in begins10:45 Lecture on land11:00​​​​​​​ Practice on the lake begins11:15 Depart for Kamogawa River12:15 Return to the campsite

• For Groups