How do you expect marine life do react to it – will animals treat it as a crab?

I don’t know if the animals treat the Crabster as a real crab or not. But we observed many fishes during the first underwater test. I thought fishes like Crabster more than the other underwater vehicles with propellers. Crabster has less flow and noise than propeller-typed vehicles. I hope animals treat Crabster friendly.