 However, sharks at the southernmost point of the Agulhas Bank may perform a small autumn migration towards the shore.Compared to other deep-sea sharks, the Izak catshark has a large heart suggestive of a relatively active lifestyle.It is a generalist that feeds on a wide variety of bony fishes, crustaceans, and cephalopods; larger sharks consume proportionately more crustaceans and fewer fishes.