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The whale shark (Rhincodon typus) is a slow-moving, filter-feeding carpet shark and the largest known extant fish species. The largest confirmed individual had a length of 18.8 m (61.7 ft). [8] The whale shark holds many records for size in the animal kingdom, most notably being by far the most massive living non-cetacean animal.
Despite their underwater habitat, whales are mammals. Mammals are not solely terrestrial; some, including whales and dolphins, are fully aquatic the University of Michigan Museum of Zoology reports.
The whale shark and basking shark exceed all other fish by a considerable margin in weight and length. Fish are a paraphyletic group that describes aquatic vertebrates while excluding tetrapods, and the bony fish that often represent the group are more closely related to cetaceans such as whales, than to the cartilaginous fish such as sharks ...
Like other fish, sharks extract oxygen from seawater as it passes over their gills. Unlike other fish, shark gill slits are not covered, but lie in a row behind the head. A modified slit called a spiracle lies just behind the eye, which assists the shark with taking in water during respiration and plays a major role in bottom–dwelling sharks.
Cetacea (/ s ɪ ˈ t eɪ ʃ ə /; from Latin cetus 'whale', from Ancient Greek κῆτος () 'huge fish, sea monster') [3] is an infraorder of aquatic mammals belonging to the order Artiodactyla that includes whales, dolphins and porpoises.
Pollution and toxins mix into the sediment where whales feed on small invertebrates and fish. In addition, the mammals face significant danger from ships and other vessels, especially around Long ...
The distinct smell of shark liver in the air and gulls diving toward a slick on the water’s surface, as well as a second shark carcass measuring 3.55 meters (11.6 feet) discovered nearby, led ...
Orcas hunt varied prey including fish, cephalopods, mammals, seabirds, and sea turtles. [63] Different populations or ecotypes may specialize, and some can have a dramatic impact on prey species. [64] However, whales in tropical areas appear to have more generalized diets due to lower food productivity.