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!


April3rd– SEASIR’s Day
10, 18, 24, 25, 29, 30thDrift diving
22nd– Sea slug observation diving
11thExcursion to Tonaki
May1, 2, 4, 5, 15, 16, 22, 23, 29, 30thDrift diving
9thSea slug observation diving
June5, 6, 12-26thDrift diving
27th– Early morning dive
July3, 4, 17, 19-23, 25, 31st – Drift diving
9th– Excursion to Manza
10, 24th– Sesoko & Minna excursions
11, 18thExcursion to Tonaki
16th– Excursion to Rukan
August1, 7, 8, 14-19, 21, 22, 28, 29Drift diving
13th – Rukan diving
20th – Excursion to Manza
September4, 5, 11, 12, 18, 20, 23-30thDrift diving
17th – Excursion to Manza
19thExcursion to Tonaki
22nd – Excursion to Hedo
October1, 3-7, 9, 11-15, 17-24, 30, 31stDrift diving
2nd & 16th– Sesoko & Minna excursion
8th– Excursion to Manza
10thExcursion to Tonaki
November1, 2, 4-7, 13, 14, 20, 22, 23, 27, 28thDrift diving
3, 21stExcursion to Tonaki


January1st– Underwater Shrine diving
March5, 6th– Coral conservation diving
April3rd– SEASIR’s Day
10th– Coral conservation diving
MayEvery FridayGolden night diving
22nd– BBQ
26 to 31stCoral spawning diving *
JuneEvery FridayGolden night diving
22nd– Sunset dinner cruise
26th– BBQ
JulyEvery FridayGolden night diving
7th– Star Festival cruise
10th– Sunset dinner cruise
14th– BBQ
AugustEvery FridayGolden night diving
14th– Sunset dinner cruise
28– BBQ
SeptemberEvery Friday Golden night diving
11th– Sunset dinner cruise
25– BBQ
October30th– Halloween party
December25th– 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 any 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?

Our shops

What adventure are you in search of?
Would you rather have a fun after dive time in the City?
Or are you in for a dip in an authentic island time?