Documents Marine Fishes Pelagic organisms that can actively swim (against a current) are known as nekton...

Marine Fishes Pelagic organisms that can actively swim (against a current) are known as nekton Nekton include some invertebrates such as cephalopods and pelagic arthropods…

Documents Cartilaginous Fishes

Cartilaginous Fishes Cartilaginous fishes (Chondrichthyes) have a skeleton made not of bone, but of cartilage, which is lighter and more flexible than bone Cartilaginous…