Okinawa remote islands in Marine sports (sea activities) Page 17

• Age 3～Age 70
• 2～3 hours
• 09:00 / 10:00 / 11:00 / 12:00 / 13:00 / 14:00 / 15:00

This tour is an adventure where licensed people rent a jet ski and a professional guide accompanies them on a separate jet ski, touring the hidden spots of Irabu Island and its surrounding areas (17END, triangulation point, sunken ship, cave, Uni Beach, etc.) depending on the strait of the day. You will be out on the water on a jet ski for about 2 hours, visiting many points and feeling the sea breeze while looking at the beautiful ocean. We will guide you to an unforgettable experience, exploring the spectacular ocean views and hidden beaches☀︎

• For Groups

• Age 0～Age 80
• Over 6 hours on the day
• 09:00

Wakeboarding Of course, it is a boat that can make you feel a bit rich with an open car feeling! Snorkeling Or Cruising The boat with the highest tension can be reserved for a reasonable price with friends! One day course with lunch!

• Pickup Service
• For Family

• Age 0～Age 85
• 4～5 hours
• 08:00 / 13:30

◉ Free use of comfortable shop and clubhouse facilities ♪ ◉ After participating, you will receive various discount coupons for souvenirs, trips to the remote island of Taketomi, etc., so we recommend participating on the first day! ★ Private tour with one car and one guide! Free rental camera for photography! Worried about small children or elderly people... Can't swim and worried about bothering others... A must-see for those who want to enjoy it just the two of you (honeymooners and couples)!! You can make your own selfish plan without worrying about others!! Especially recommended for small children and elderly people!! You can freely customize the basics of Kabira Bay + Blue Cave snorkeling, and a short mountain climb with a spectacular view + snorkeling! For example...・Your children are small and want to snorkel slowly in shallow waters・Grandpa and Grandma don't snorkel but want to participate・I want more tourist spots (I want to go here, I've been there so I don't need to go there)・I want to snorkel hard, etc. We will make a plan to meet your requests as much as possible! ! As long as it's within the time limit, it's OK! ! Ishigaki Island [Blue Cave] Ishigaki Island [Mini Mountain Climbing & Snorkeling] *This is just one example of a plan. 4-hour course 8:00/13:30 Pick up at your accommodation or meet on site Equipment adjustment at the shop ↓ 9:00/14:00 Shooting at Kabira Bay or shooting at a scenic spot ↓ 9:30/14:30 Snorkeling in the best sea ★ ↓ 11:00/16:00 Refresh at the waterfall basin or go to a secret spot ↓ 11:30/17:30 Chill time at a gelato shop with a great view! ↓12:00/17:30 Arrive at the shop. Drop off at your accommodation or disband. *Please note that there is no dedicated photographer accompanying you. *Please note that the tour contents may be changed or canceled depending on the sea conditions, and the tour may run beyond the scheduled time.

• Pickup Service
• With Pets
• For Rainy Days
• For Groups
• For Family
• Summer Campaign Sale 2025

• Age 3～Age 75
• 3～4 hours
• 08:00 / 13:30

◉ A long-established company with a high level of satisfaction, with all instructors in its 16th year, so it's safe and secure ◉ Use of the spectacular clubhouse facilities (parking, showers, lockers with keys, changing rooms, all 500 yen free♪) ◉ We recommend joining on the first day! (Coupons for discounts on boats to remote islands, Taketomi water buffalo carts, and souvenirs from affiliated stores are included!) ◉ Fun guides even while traveling by car ◉ Lots of sea turtles, Kumano Minimo, fish and coral! ◉ Small group size, one group per car ◉ Free transfer within 10 minutes of the city center ◉ Beach entry, so those who are new to Ishigaki Island, those who have never snorkeled, and those who are worried about swimming or seasickness can participate with peace of mind. ◉ Photography is also available. It's not just a tour for photography, but a tour that you can enjoy. ◉ Enjoy it even in the rain, and it's held all year round. [Blue Cave] Morning / Afternoon 4-hour course 8:00 / 13:30 Pick up from your accommodation or meet at the site If you rent a car, meet at the shop (free parking) [Arrive and meet at the shop] Reception, payment, change clothes, set up tour equipment Move by car ↓ 9:00 / 14:30 Head to Kabira Bay, one of the 100 most scenic spots in Japan [Kabira Bay] When you think of Ishigaki Island, this is the place to be! A spectacular view that you can't miss, representing Okinawa! ↓ 9:20 / 14:50 Jungle exploration / to the beach [Drive by car] Enjoy the drive by car. ↓ 9:30 / 15:00 [Jungle trekking] A special route, go through the hermit crab forest and through the jungle to see the white beach and blue sea right in front of you! [Exploring the stalactite cave inside the cave] Cave exploration with a mysterious atmosphere, dynamic mysterious stalactite caves and rocks! ↓10:00 / 15:30 Snorkeling 30-50 minutes [Arrive at Star Sand/Sun Sand Beach] Head to the beach where natural Star Sand/Sun Sand has fallen [To the snorkeling point] Snorkeling in the beautiful blue ocean with fish, sea turtles, clownfish and more is sure to be a lifelong memory! ↓11:00 / 17:00 Refresh in the restorative waterfall basin [To the refreshing waterfall basin] Head to the waterfall full of negative ions and refresh yourself by clearing away both the seawater and your fatigue! ↓12:00 / 17:30 Arrive at the shop Drop off at your accommodation or disband [Pick up to the shop or accommodation] We will pick you up to your accommodation or a designated location. *The tour content may be changed or canceled depending on the sea conditions, and it may exceed the scheduled time.

• Pickup Service
• For Rainy Days
• For Groups

• Age 10～Age 60
• 3～4 hours /Over 6 hours on the day
• 09:00

When the tide goes out, a deserted island of pure white powder sand appears, a phantom island. After landing, enjoy trial diving and wakeboarding at Lake Sai, one of the largest coral reefs in Japan!

• Pickup Service

• Age 3～Age 70
• Within 1 hour
• 17:30

The "Sunset Jet Ski Tour" is a luxurious experience of riding a jet ski to Uni Beach at dusk. It takes just 5 minutes to reach your destination and enjoy the beautiful sunset. Drinks are provided as refreshments during the tour, allowing you to enjoy a comfortable cruise. In addition, a photo shoot by professional staff is included in the plan, allowing you to commemorate memorable moments. This tour is perfect for couples and families looking for a special experience or a romantic time. The jet ski experience while feeling the wind and the sunset at your back will be a wonderful memory that will stay with you forever. Let's forget about everyday life and have a fun time with this plan that you can easily participate in.

• Age 3～Age 65
• 1～2 hours
• 08:30 / 10:30 / 13:00 / 15:00

[Private Miyako Blue SUP Tour with a Spectacular View] Experience SUP in the crystal clear waters of Miyakojima! SUP cruising in the world-renowned sea is sure to make you forget your daily life and relax! Even if you are a beginner to SUP, our staff will give you a detailed lecture! ! Charter plan includes drone photography! No additional charge! Free photo data! It's sure to look great on Instagram! Solo travelers/couples/friends/family/small children/everyone is welcome★Beginners and children are also welcome! ★Free photo data & equipment rental! ★SUP in Miyako Blue★Instagrammable spot! ★Drone photography data as a gift [Example schedule on the day of the tour] ①8:30/13:00 Meet with the guide! Preparation for the activity ↓ ②8:40/13:10 Start SUP cruising at a spectacular spot ↓ ③10:00/14:30 End of activity. Disband at the local field. *The schedule may change depending on the weather and tide on the day. *In the event of sea conditions or strong winds, the vehicle may be changed to a canoe.

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

• Age 18～Age 80
• 3～4 hours /Over 6 hours on the day
• 09:00 / 13:00

We will guide you to the sea that can only be reached by charter boat! We will guide you to the place you want to go. Cruising only with friends is definitely the best! Please have fun with your friends ^_^

• For Rainy Days
• For Groups

• Age 3～Age 70
• 2～3 hours

Let's enjoy the sunset time on SUP! The sea and sky dyed in the setting sun are very fantastic, and you can spend a chill time that is a bit different from the daytime ♪ We will teach you how to ride SUP carefully from the beginning, so please be assured even for the first time. I am confident in how to teach! Drone shooting is also included, so please come and make memories!

• For Rainy Days

• Age 3～Age 80
• 2～3 hours
• 09:00 / 13:00

‥‥◆◆Private SUP & Snorkeling Tour for 1 Group◆◆‥‥"Enjoy the ocean of Miyakojima!!" Miyakojima has an ocean that is second to none in the world. Why not try swimming in such an ocean? Miyako Pachi Tours will guide you through activities in the beautiful ocean of Miyakojima. SUP & Snorkeling Tour in the beautiful ocean of Miyakojima Cruise on the now popular SUP (Stand Up Paddleboarding) in the blue ocean of Miyakojima and enjoy the extraordinary world of colorful tropical fish and corals while snorkeling. Families and couples are welcome◎Privately rented for 1 group and want to enjoy it privately Do not want to bother others Have children and want to swim at their own pace You can enjoy a tour tailored to your needs that cannot be done on a group tour. Children can join the tour from 3 years old and above, and we will carefully guide even those who have never snorkeled before. (Please consult us if you are under 3 years old) People over 60 years old can also participate ♪♪ We will provide you with a page of memories of your trip to Miyakojima. [Meeting place / meeting time] Meet on site, disband on site ① 9:00 ~ ② 13:00 ~ Duration about 2.5 hours * Tour time is an estimate. The meeting place and meeting time may change depending on the sea conditions on the day. We will inform you of the details by the day before the tour, so please check it.

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

• Age 3～Age 80
• 1～2 hours
• 09:00 / 13:00 / 18:00

‥‥◆◆Private SUP tour for one group◆◆‥‥"Enjoy the ocean of Miyakojima!!" Enjoy the crystal clear beautiful ocean of Miyako blue with the popular SUP (Stand Up Paddleboard)!! Families and couples are welcome◎Want to enjoy privately with a private tour for one groupWant to avoid bothering othersWant to swim at your own pace with childrenYou can enjoy a tour tailored to your needs that cannot be achieved with a group tour. Children can tour from 3 years old and we will guide you carefully even if it is your first time. (Please consult us if you are under 3 years old)We also accept sunset tours. We will provide you with a page of memories for your trip to Miyakojima. [Meeting place and meeting time] Meet on site, disband on site①9:00～ ②13:00～ ③1 hour before sunsetTime required Approximately 90 minutes*Tour time is an estimate. The meeting place and meeting time may change depending on the sea conditions on the day. We will inform you of the details by the day before the tour, so please check.

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

• Age 3～Age 65
• 1～2 hours
• 17:00 / 18:00

While being healed by the pleasant sea breeze and the sound of the waves, take a leisurely stroll on the clear sea with SUP (Stand Up Paddle Board). Enjoy the changing colors of the sky and have a wonderful time at the end of the day.

• Pickup Service
• For Groups

• Age 6～Age 100
• 1～2 hours
• 13:00

“Regionally Common Coupon Usage Plan” A sense of unity with the ocean that can only be experienced by riding a supboard! One of the appeals of SUP is the wide field of view and the ability to row in your own style. Let's get on a SUP and explore the untouched rich nature where mangroves and flora and fauna live! Take a walk on the sea from the big ocean that spreads out in front of you to the river where mangroves live! Explore nature to the fullest at your own pace! You can leisurely row along and take a walk on the sea, lie down and feel the sound of the waves, and look up at the sky... Surrounded by vast mangroves, the air you breathe while taking a forest bath is exceptional. ◆What is SUP? A marine sport that originated in Hawaii. ``SUP'' (stand up paddle) is an activity that is rapidly gaining popularity around the world, where you ride a board with a paddle. It is highly stable and can be ridden by both adults and children. Even those with no experience can ride it easily and row at their own pace. Also, since you are balancing on the board, it is gaining attention as an exercise that works on the inner muscles of your legs, hips, and trunk. ◆In order to enjoy SUP safely, there are various dangers hidden in nature. Please work with an instructor who has a thorough knowledge of weather conditions, oceans, rivers, etc. Please be sure to understand your own physical condition and skill level and play in a way that suits your level.

• Pickup Service
• With Pets
• For Groups
• Summer Campaign Sale 2025

• Age 1～Age 60
• Over 6 hours on the day
• 09:00

Any combination is OK! We also offer a one-day course! Lunch included!

• Age 3～Age 75
• 3～4 hours
• 08:00 / 13:30

Mangrove kayak and SUP exploration tour in the great outdoors! Entry fee includes 1,500 yen for interacting with squirrel monkeys! ◉You can take turns to experience both kayaking and SUP, which anyone can enjoy, at Yaima Village, a place you absolutely must visit when you come to Ishigaki Island! There are also many photogenic spots! ◉You can see Ishigaki Island's primeval forests and rare creatures at Nagra Ampar, a Ramsar Convention Protected Area. This point is limited. ◉Even during the drive, a guide who knows Ishigaki Island inside and out will show you tourist spots and secret information, so you won't get bored. ◉You can ride with your children in tandem (multiple people riding together). Kayaks are available for ages 3 and up, and SUP is available for ages 7 and up! Children 10 and up will be riding alone. (Regular price) ◉It's a leisurely ride through the mangroves, so even those who are not confident in their physical strength can do it. *Kayak and SUP time is about 1 hour, and it will only be held when the tide is high. *Kayak and SUP can be taken on the day of the tour! [4 people on SUP and 12 people on kayaks at once]

• Pickup Service
• For Rainy Days
• For Groups
• Summer Campaign Sale 2025

• Age 10～Age 60
• Within 1 hour

First time on Kumejima! Experience the latest activity, Swimbo, at Hatenohama Beach! Swimbo is a water scooter that allows you to snorkel comfortably!

• For Groups

• Age 4～Age 65
• 2～3 hours
• 10:00 / 13:00

It is a plan to fully enjoy kayak and snorkeling! Kayak beginners and small children can participate with confidence. You can see through the sea, the blue sky, the beautiful landscape, you can feel exhilaration. First off at Kayak for uninhabited island, explore the uninhabited island! In snorkeling, there are plenty of beautiful coral and colorful fish ♪ ♪ You may meet sea turtle! What? ~ Flow of the day ~ ① Pick up shop group or accommodation destination / Zamami port (5 minutes) ② Move to the beach and explain how to row the kayak (10 minutes) ③ Take the kayak and leave for the uninhabited island! (35 minutes) ④ Uninhabited island exploration, break, tea time (35 minutes) ⑤ Snorkel (40 minutes) ⑥ Take the kayak and go to the beach (35 minutes) ⑦ Move to shop (5 minutes) ⑧ dissolution

• Pickup Service
• For Rainy Days
• For Groups

• Age 12～Age 65
• 2～3 hours
• 10:00 / 13:00

It is a plan to fully enjoy SUP and snorkeling! Zamami ocean has high transparency, you can see through the ocean, you can enjoy a walk on the water like if it is floating in the air. First off at SUP for private beach, walk around the beach & tea time! In snorkeling, there are plenty of beautiful coral and colorful fish ♪ ♪ You may meet sea turtle! What? ~ Flow of the day ~ ① Pick up shop group or accommodation destination / Zamami port (5 minutes) ② Move to the beach and explain how to row SUP (10 minutes) ③ Take the SUP and leave for the private beach! (35 minutes) ④ Walking around the beach, taking a break, tea time (35 minutes) ⑤ Snorkel (40 minutes) ⑥ Take the SUP and take the beach (35 minutes) ⑦ Move to shop (5 minutes) ⑧ dissolution

• Pickup Service
• For Rainy Days
• For Groups

• Age 15～Age 59
• Over 6 hours on the day
• 08:20

It will be a funding tour that even beginners and those who haven't seen in a long time can enjoy it without difficulty. There are regulars, but it's a shop with many beginners. We will select points according to the sea conditions and requests of the day. I meet sea turtles and manta rays that are often requested! In addition, we will introduce various creatures such as sea cows, small shrimp, and crabs. Since everything is done by boat, you can Diving comfortably without having to carry heavy equipment on your back and walk on the beach. The boat you use also has a toilet, a sunshade tent, and a wave tent, so you can spend your time comfortably. Open water qualifications from other organizations can participate even if they are not PADI open water qualifications. If you are a little worried, we will teach you various things, so please join us!

• Pickup Service

• Age 10～Age 65
• 2～3 hours
• 09:00 / 14:00

"Jet Blade" that flies by the water pressure of marine jet Only SEA CAT can experience in Ishigaki Island, Okinawa Prefecture! A new type of marine sports where you can ride the water pressure jetted from the marine jet with the jet blade at your feet. You will feel refreshed if you take a walk in the air by riding the jet style! As you get used to it, you can take pictures with a smile while moving in the direction you want to go. It is a marine sport recommended by the captain that you want to experience once. Of course, there is no doubt that the sea on Ishigaki Island is so beautiful. It can be held even on rainy days. First-timers and children can also experience (10 years old and over). Of course, experienced people are also welcome. Please leave it to the experienced captain. You can enjoy it with peace of mind as we will carefully wear a life jacket and give lectures by professional staff. Free transportation is possible in the city. The departing port (Hamasaki Marina) is a 5-minute drive from the city center.

• Pickup Service
• For Groups

• Age 3～Age 65
• 2～3 hours /3～4 hours /4～5 hours

Enjoy a great deal by collecting the most popular tours in Miyakojima! This plan can only be realized by a captain born in Miyakojima. Free photography is included with every tour! Enjoy the ocean of Miyakojima with your whole body (^^) *Since the tour locations are different, you will need to travel by car. Also, depending on the sea conditions, it may not be possible to do consecutive tours. We are confident that this set will help you! Release your daily stress!

• Age 10～Age 80
• 2～3 hours
• 16:00 / 17:00 / 18:00

Enter from the beachside of Ishigaki Island and enjoy a leisurely SUP cruise! Enjoy the beautiful magic hour and photogenic views from your SUP. This tour is suitable for beginners and takes about 2 hours, including transportation from the city. Estimated tour start time: Winter (16:00-17:00) Summer (17:00-18:00)

• Pickup Service
• With Pets

• Age 7～Age 70
• 1～2 hours
• 17:00 / 18:00

It is a plan that you can enjoy sunset SUP on the beach with a spectacular sunset view around Miyakojima. ★ Beginners welcome! Enjoy the sunset on the superb beach ♪ ★ Free photo shoot of memories ♪ Excellent instagram ♪ A mysterious color magic that fascinates you from the evening. The setting sun on the horizon. .. The soft light of the sunset that glitters on the surface of the water. .. This experience of releasing your heart is a luxurious time. An emotional experience that melts into the sea and heals your mind and body. Please leave it to us for photogenic photography.

• For Groups
• Summer Campaign Sale 2025

• Age 1～Age 100
• 1～2 hours

Rent a jet ski and go touring with a guide! Please fill in the desired start time in the remarks column. Destination request possible! You can choose your desired touring course. If you wish, you can also snorkel while touring ☆Let's go see Nemo and Dolly! *It is possible to take photos during the special ship license tour. Even small children can participate! It has been designated by the Okinawa Prefectural Public Safety Commission as a marine leisure facility with excellent safety measures. Jet ski in Miyakojima, boat charter is a safe and secure jet cruise!

• Age 0～Age 100
• 3～4 hours
• 08:40 / 13:30

Arrival and departure at Kohamajima Snorkeling You can land on "Island of Illusion"half-day It is a plan of The travel time to the point is short, so there is less concern for small children and seasickness, so it's easy to enjoy! Experience colorful tropical fish and Churaumi Snorkeling"Experience! You can also land on the" phantom island "in the best location where you can hardly find it all over the world! It is a special tour that can be enjoyed with us who are the pioneers of the phantom island tour ♪ ♪

• For Rainy Days
• For Groups
• For Family

• Age 4～Age 65
• 2～3 hours
• 10:00 / 13:00

[Okinawa / Zamami Island] Flying SUP?! SUP cruising & snorkeling in the crystal clear waters of Zamami! A half-day SUP tour where you can meet sea turtles! *All tour photos are a gift! [Meet at the shop] (10:00 am, 1:00 pm) *We will be waiting for you with a sign at Zamami Port. *Guests who are already staying will be picked up at the inn. ↓ [Explanation at the beach] We will explain how to row a SUP, the conditions of the day, and points to note in an easy-to-understand manner. ↓ [SUP cruising] The destination will vary depending on the wind of the day, but you can go to a deserted island or look for sea turtles. ↓ [Snorkeling to the sea world] We will guide you through the beautiful sea world of "the sea that the world loves" by snorkeling. The sea of Zamami is home to many tropical fish and sea turtles. Let's enjoy the sea world with a spirit of intrusion! *Even if you are new to snorkeling and are not good at swimming, the guide will carefully follow up. ↓【Arrive at the shop】(Am.: 12:30, PM: 15:30) You will receive digital photos of the tour at the shop. ↓【Disband】Showers are available for use. ☆Experience fee☆Adults 8,800 yenChildren (elementary school students) 6,600 yen※Participation is conditional on being able to swim alone. ※If there are children in your family who cannot swim, they can wait on the beach with their guardian. Please consult with us in advance. ☆Included in the fee☆SUP set/Snorkel set/Life jacket/Wetsuit (winter only)/Guide/Transportation/Insurance☆Things to bring/Clothes☆Sun protection (sunscreen, hat, rash guard, sunglasses)/Sandals or marine shoes/Drinks/Towel※It is easier if you wear your swimsuit under your clothes. You cannot walk around the village in just your swimsuit and surf pants. ☆Notes☆※Please make a reservation for the boat to Zamami in advance. Boat reservations can be made online 2 months in advance and by phone 1 month in advance. Zamami Village Office Naha Branch (10:00 - 17:00) *Depending on the weather and conditions of the day, the tour may be canceled for safety reasons. Duration: Less than 3 hours Price includes: SUP set / Snorkel set / Life jacket / Wetsuit (winter only) / Guide / Pick-up / Insurance

• Age 0～Age 65
• 1～2 hours
• 11:00 / 14:00

Finally! A new plan from Cheerful! Miyakojima is not just about the "clear blue sea". The highlight of this plan is the mangroves and palm trees that are full of nature! The photos taken with the powerful mangroves and over 1,000 palm trees, which are rare to see in Japan, in the background are very impressive! In addition, Cheerful offers free drone photography, and the videos are as moving as the PV. Of course, we will send you all the data you shoot for free at a later date. Enjoy your memories of your trip to Miyakojima even after you get home! Also, unlike events at the sea, it is not affected by wind and waves, so it is perfect for beginners, families with children, and seniors. Even if you have never done marine activities before, our staff will always accompany you and carefully explain how to operate the equipment, so please apply with confidence. We have received positive feedback from our customers who have participated, saying, "It was a lifelong memory!" and "It was a valuable experience!" ♪《Tour participants only》Cheaful offers a rental car set plan that allows you to rent a car at a discount in combination with marine equipment, even though it is difficult to reserve a rental car during the season in Miyakojima. ♪ The type of car is an 8-seater minivan, perfect for travelers with a lot of luggage! Please contact us by phone for details.

• For Rainy Days
• For Family

• Age 5～Age 59
• 4～5 hours
• 09:00

This is a boat tour that will take you to the very popular snorkeling spot "Yaebiji". We operate in "small group" tours, so you can feel at ease as you can easily communicate with our staff! You can take plenty of underwater photos and drone shots! You can move between spots quickly so there is little wasted time! Customers can get along well with each other! There are many benefits to this tour! On the day, we will take plenty of photos of you with underwater cameras and drones as we visit three spots with different expressions. Of course, we will also take individual photos for each group♪ If you are a little worried about your first time at Yaebiji or if you would like to enjoy a little more leisurely fun next time, please come and join us!

• For Rainy Days
• For Groups

• Age 0～Age 100
• 1～2 hours
• 18:00

It is a plan to land on "Phantom Island" at sunset time, arriving and leaving Kohama Island♪ Traveling from Kohama Island to point is short, so there are few worries about small children and seasickness, so it's easy to enjoy! You can play on the beautiful sandy beach on the "phantom island" in the best location that you can rarely meet even if you look around the world! !! It is a special tour that we can enjoy together with us as a pioneer of phantom island tour ♪♪

• For Rainy Days
• For Groups
• For Family

• Age 1～Age 100
• 1～2 hours

Tour the sea of Miyakojima! We will guide you through the sea of Miyakojima by riding a jet ski operated by a guide. You don't need a license, you can request a destination, and you can snorkel while touring if you wish♪ Let's meet Nemo and Dolly! It is possible to take pictures during the tour, you can take pictures yourself and the guide will also take pictures. Even small children can participate! Please fill in the desired start time in the remarks column. It has been designated by the Okinawa Prefectural Public Safety Commission as a marine leisure facility with excellent safety measures. Jet ski in Miyakojima, boat charter is a safe and secure jet cruise!