← Rock Pool Directory/ Hong Kong/ Basalt Island

Basalt Island

香港 Hong Kong, 新界 New Territories · Hong Kong

What have people found?

Rosy spindle cowry, beaded sea anemone and holthuis' anemone shrimp turn up here more than at our other rock pools. Bubble-tip anemone, thorny sea cucumber and spotted white sea slug are the usual finds. ~189 distinct species have been recorded here, across at least 3 years of observations.

What is the best time to visit today?

Download the app to see the 7-day schedule.

See low tide times at Basalt Island for the next three days
  1. Mon 16 Nov~8:00~17:30
  2. Tue 17 Nov~8:30in the dark~18:30
  3. Wed 18 Novin the dark~2:30~9:30

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 April and May.

What should you know before visiting?

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 Basalt Island?

Species records from iNaturalist

Bubble-tip AnemoneEntacmaea quadricolor
Goniobranchus sinensisGoniobranchus sinensis
Thorny Sea CucumberColochirus quadrangularis
Spotted White Sea SlugChromodoris orientalis
Ceratodoris hiroiCeratodoris hiroi
Holthuis' Anemone ShrimpAncylomenes holthuisi
Banded Coral ShrimpStenopus hispidus
Kaloplocamus acutusKaloplocamus acutus
Rosy Spindle CowryPhenacovolva rosea
Dendrophyllia arbusculaDendrophyllia arbuscula
Black Longspine UrchinDiadema setosum
Pentaceraster chinensisPentaceraster chinensis
Beaded sea anemoneHeteractis aurora
Goniobranchus tumuliferusGoniobranchus tumuliferus
Dichotella gemmaceaDichotella gemmacea
Scan this rock pool on your next visit.

Every organism named, every visit logged to your journal.