Both species are predators, they feed on fish, crustaceans, mollusks, they are indifferent to larger creatures. However, if you try to foolishly grab the same katran, say, by the tail, it can bite. At the same time, the consequences and sensations will be comparable to a dog bite: the jaws of the katran are quite powerful. You should be careful when touching the caught fish: its body is covered with spikes, some of them secrete a weak poison. Katran is one of the most numerous inhabitants of the Black Sea. The feline shark, the scillium, is much more difficult to meet in this water area: it only occasionally appears in its Turkish part.
What else to read on the topic
Divers told about their most terrible dives and underwater encounters
10 most dumb reptiles of Crimea
Are there sharks in the seas of Turkey and what you need to know about them