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Koh Tao

จังหวัดสุราษฎร์ธานี · Thailand

What have people found?

Purple crab, indo-pacific giant barrel sponge and lesser star coral turn up here more than at our other rock pools. Greenfish sea cucumber, lollyfish sea cucumber and mottled lightfoot crab are the usual finds. ~81 distinct species have been recorded here.

What is the best time to visit today?

Download the app to see the 7-day schedule.

See low tide times at Koh Tao for the next three days
  1. Mon 16 Novin the dark~0:30
  2. Tue 17 Novin the dark~1:00
  3. Wed 18 Novin the dark~1:30

Every low tide each day, in local time at the shore.

Plan the week in Intertidal
  • A tide chart for every day, with the best window marked
  • Identify what you find from a photo
  • An alert when a good daylight low is coming

When do people visit?

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Most observations come from July and August.

What should you know before visiting?

Parking is about 250 meters away.
Arrive 45 minutes to an hour before low tide and leave as it turns. The water comes back faster than it left.
Grippy shoes beat sandals. Wet rock and algae are more slippery than they look. Rock pool safety
A rock pool is a fragile place. Look and photograph, take nothing. The rockpooling code

What lives at Koh Tao?

Species records from iNaturalist

Greenfish Sea CucumberStichopus chloronotus
Lollyfish Sea CucumberHolothuria atra
Mottled Lightfoot CrabGrapsus albolineatus
Elysia aowthaiElysia aowthai
Purple CrabGecarcoidea lalandii
Indo-Pacific Giant Barrel SpongeXestospongia testudinaria
Lesser Star CoralGoniastrea pectinata
Magnificent Sea AnemoneRadianthus magnifica
Black Longspine UrchinDiadema setosum
African Giant SnailLissachatina fulica
Tongue CoralHerpolitha limax
Luzon Sea StarEchinaster luzonicus
White-spotted Hermit CrabDardanus megistos
Unidentia aliciaeUnidentia aliciae
Fluted Giant ClamTridacna squamosa
Scan this rock pool on your next visit.

Every organism named, every visit logged to your journal.