Annual Events

Plenty of fun all year!

We organise a variety of events all year round.
Not only do we provide special diving excursions, but we also hold some seasonal activities on land.
Whenever you come to Okinawa, you will have plenty of opportunities to enjoy your time with SEASIR!


April8 ,10, 16, 17, 30thDrift diving
9thExcursion to Tonaki
23rd– Sea slug observation diving
May1stExcursion to Tonaki
2-7, 14, 15, 21, 22, 28, 29thDrift diving
26thSea slug observation diving
June4, 5, 11-14, 16, 19-21thDrift diving
18th– Excursion to Rukan
July3rd– Early morning dive
2, 3, 16, 17th – Drift diving
4, 12, 20th – Night diving
8th– Excursion to Manza
29th– Excursion to Sesoko & Minna
August1, 9, 17, 29th – Night diving
5th – Excursion to Hedo
11, 13thDrift diving
12th – Excursion to Manza
19th– Excursion to Sesoko & Minna
September3, 4, 10, 11, 17-19, 23-27, 29thDrift diving
6, 14th – Night diving
9th – Excursion to Hedo
17th – Excursion to Manza
30th– Excursion to Sesoko & Minna
October8-11, 13, 15-18, 20-25, 27-30thDrift diving
14th– Excursion to Sesoko & Minna
November1-5, 12, 13, 19, 21-23, 26, 27thDrift diving
6, 20thExcursion to Tonaki


January1st– Underwater Shrine diving
11/Jan-9/Feb – Closed
February11/Jan-9/Feb – Closed
19, 20, 26, 27th – Sea slug observation diving
March5, 15th– Coral conservation diving
5, 6, 12, 13, 26, 27th – Sea slug observation diving
April3rd– SEASIR’s Day *¥4,300 discount on stays
15th– Coral conservation diving
MayEvery FridayGolden night diving
15th– Coral conservation diving
16 to 24thCoral spawning diving *
26th– BBQ
JuneEvery FridayGolden night diving
10th– Sunset dinner cruise
15th– Coral conservation diving
25th– BBQ
JulyEvery FridayGolden night diving
9th– Sunset dinner cruise
15th– Coral conservation diving
23rd– BBQ
AugustEvery FridayGolden night diving
13th– Sunset dinner cruise
15th– Coral conservation diving
27th– BBQ
SeptemberEvery Friday Golden night diving
10th– Sunset dinner cruise
15th– Coral conservation diving
24th– BBQ
October15th– Coral conservation diving
November15th– Coral conservation diving
December24th– Christmas party
31st– Countdown party

*The dates listed are the days when the coral has a high probability of spawning. Since it is a natural phenomenon, there is no guarantee that you can see the coral spawning on those days.

Our Most Popular Events and Excursions

Excursions to Tonaki

Dip in the deep blue!
Tonaki is a famous diving site where you will enjoy the sight of countless lively fish and healthy corals.
Last but not least, you will also find an impressive ocean floor drop-off point there!

Night diving

Night-time diving can be enjoyed all year round from Aka island. Enjoy a swim in total darkness away from the city lights!
Admire an array of nocturnal creatures such as squids, shrimps and sharks, or steal a peek at a fish’s sleepy face.

Coral spawning expeditions

A once in a year occasion!
Go on a magical night-time dive excursion like no other and admire the sea as it gets submerged in what looks like pink champagne bubbles!
Ready for the most enchanting experience of your life?

Two styles of stay with SEASIR

Choose a center based on your preferred style of diving holiday:
Are you in for some nightly fun in the City after your dives?
Or would an incredible starry sky complete a perfect day of swim and calm for an authentic island time?