The porbeagle is known for a particularly unusual behavioural trait: it is one of the very few fish that is known to play. Porbeagles have been observed rolling and wrapping themselves in long strands of kelp at the surface of the water, apparently for no purpose other than amusement (although it has been theorised that they are scraping off parasites or hunting small animals in the weed). Porbeages will also play chase one another and prod or toss any objects they find floating, including driftwood and balloon floats.
Great white sharks are, despite their reputation as lone, mindless killing machines, surprisingly intelligent and social. In high population such as South Africa, resident great whites have a noted dominance hierarchy, with large females at the head of the pecking order. One population, that surrounding Seal Island, great whites travel and migrate in established “clans” of two to six animals. These clans have established hierarchies and interactions similar to those of a wolf pack, and establish their ranks through non-violent displays.
ifesbob 