". . . we don't understand animal consciousness . . ."
Marian Stamp Dawkins was talking about "even invertebrates". And when it comes to these "lesser" creatures, we know so little! Here's another hint as to how hermit crabs think and learn.
On second thoughts, that fork was too slippery. I should have taken a minute to wind some string around it.
The things that swim by in the background are amphipods and copepods.