I have also take a video of the shark wading in the tidal pool! :) Many thanks to Ivan for the id of this shark.
Marine Park which constitutes both the intertidal and subtidal (diving) areas for visitors to explore.
Fringe-eyed flathead (Cymbacephalus nematophthalmus) is huge! The coolest part of this flathead would be what seems to be their golden eyelashes. Those "eyelashes" are actually 6-9 skin tentacles over their eyes.
Circular mushroom corals (Family Fungiidae). These mushroom corals used to be more fairly common on Big Sister's.
Fluted giant clams (Tridacna squamosa), some of the guides placed the two pairs of shells together in this clam graveyard. :(
Long-spined black sea urchins (Diadema setosum) on the intertidal flat. Most of them were found beside a coral or in a rock crevice except for the one on the left.
Feather stars (Order Comatulida) including the Red feather star (Himerometra robustipinna).
Red egg crab (Atergatis integerrimus) on the reef today. Though they look like chilli crab, red egg crabs are poisonous and must not be eaten as their toxin is not destroyed by cooking.
Spotted hermit crab (Dardanus sp.). They are not commonly sighted on our trips.
Pimply phyllid nudibranch (Phyllidiella pustulosa) and Black phyllid nudibranch (Phyllidiella nigra).
Blue-lined flatworm (Pseudoceros sp.).
Reef octopus (Family Octopodidae) looks flamboyant as it extends its webbing and arms out in response to me approaching the fellow. The patterns on this octopus looks really nice.
Common sea stars (Archaster typicus)! This is our first time seeing them in the big lagoon.
More photos of the trip on my facebook album: