Fish,sharks, and sea hourses come to mind. Sting rays do to
Manta ray, electric ray, sharks, clown fish, sea horses,great white sharks,hammerhead sharks,tuna,sardine
Gold fish,tadpoles and fish too.
Fish, crabs, tadpoles, oysters, and prawns
All fishes breathe through gills.
Dolphins do not because they are mammals
Fish , sharks etc