Here are a number of creatures spotted:-
A drill-like shell. Not sure what it is! We had to 'capture' it in a ziplock bag for further identification.
Wenqing spotted the Knobbly Sea Star. She was really happy with the find! It's tube feet were fully extended out and moving about...
Can you guess what this is?
It's the Sentinel Crab! It's eyestalks can be tucked away nicely on the side, making it look very rectangularish indeed.
Hermit crab living in a shell not of its own. It's not a true crab and has to migrate from "shell to shell" when it grows larger.