 The slow @-@ swimming leopard catshark generally spends the day resting inside caves or crevices , either alone or in groups . At night , it moves towards the shore to actively forage for small bony fishes , cephalopods , crustaceans , and polychaete worms . In False Bay , fishes are the most important prey type , followed by cephalopods and then the Cape rock lobster ( Jasus lalandii ) . This shark has been observed attacking octopus and cuttlefish by seizing and tearing off tentacles with a twisting motion . Like its close relative the pyjama shark , it will temporarily abandon its nocturnal habits to take advantage of the daytime mass spawnings of the chokka squid ( Loligo vulgaris reynaudi ) , which occur unpredictably year @-@ round with a peak from October to December . The sharks lie motionless amongst the squids ' egg masses with their heads hidden , and make sudden lunges at female squid that have descended to the sea floor to attach their eggs . 
