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A juvenile whale shark is estimated to eat 21 kg (46 pounds) of plankton per day. [67] The BBC program Planet Earth filmed a whale shark feeding on a school of small fish. The same documentary showed footage of a whale shark timing its arrival to coincide with the mass spawning of fish shoals and feeding on the resultant clouds of eggs and sperm.
As with residents and transients, the lifestyle of these whales appears to reflect their diet; fish-eating orcas off Norway have resident-like social structures, while mammal-eating orcas in Argentina and the Crozet Islands behave more like transients. [118] Orcas of the same sex and age group may engage in physical contact and synchronous ...
Remora. The remora (/ ˈrɛmərə /), sometimes called suckerfish or sharksucker, is any of a family (Echeneidae) of ray-finned fish in the order Carangiformes. [4] Depending on species, they grow to 30–110 cm (12–43 in) long. Their distinctive first dorsal fins take the form of a modified oval, sucker-like organ with slat-like structures ...
The whale shark is the largest species in this order, reaching up to 20 meters long when fully mature. [50] No other species in the order even approaches this size. The next largest species is the nurse shark ( Ginglymostoma cirratum ), which can grow up to 4.3 m (14 ft) across the disk and weighing more than 350 kg (770 lb).
The pilot fish congregates around sharks, rays, and sea turtles, where it eats ectoparasites on, and leftovers around, the host species; [4] younger pilot fish are usually associated with jellyfish and drifting seaweeds. [5] They are also known to follow ships, sometimes for long distances; one was found in County Cork, Ireland, [6] and many ...
The megamouth shark (Megachasma pelagios) is a species of deepwater shark. Rarely seen by humans, it measures around 5.2 m (17 ft) long and is the smallest of the three extant filter-feeding sharks alongside the relatively larger whale shark and basking shark. According to Sharkman's World Organization a total of 286 specimens have been ...
Leedsichthys is an extinct genus of pachycormid fish that lived in the oceans of the Middle to Late Jurassic. [1] It is the largest ray-finned fish, and amongst the largest fish known to have ever existed. [2] The first remains of Leedsichthys were identified in the nineteenth century. Especially important were the finds by the British ...
The copper shark (Carcharhinus brachyurus), bronze whaler, or narrowtooth shark is a species of requiem shark found mostly in temperate latitudes.It is distributed in a number of separate populations in the northeastern and southwestern Atlantic, off southern Africa, in the northwestern and eastern Pacific, and around Australia and New Zealand, with scattered reports from equatorial regions.