False Killer Whale
FALSE KILLER WHALE
Pseudorca crassidens
False killer whales are large, long-bodied delphinids, almost entirely black or dark grey, with a rounded, conical head, no beak. Adults reach 6 m in length, with males slightly larger than females. Scars from interactions are uncommon and often fade with time. This species is highly social, usually forming groups of about 100 individuals, though larger aggregations occur. They are pelagic but may approach coastal areas, feeding on a wide variety of fish. False killer whales are active, acrobatic, and sometimes engage in bow-riding. Globally, they inhabit tropical and warm-temperate oceans, but are naturally uncommon. In Portuguese waters, they have been observed in spring, feeding on bluefin tuna (Thunnus thynnus), an unusually regular presence for the region, though overall information about this species here remains limited.