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The first shark-like chondrichthyans appeared in the oceans 400 million years ago, [1] developing into the crown group of sharks by the Early Jurassic. [2] Listed below are extant species of shark. Sharks are spread across 512 described and 23 undescribed species in eight orders. The families and genera within the orders are listed in ...
The dark shyshark or pretty happy (Haploblepharus pictus) is a species of shark belonging to the family Pentanchidae, the deepwater catsharks. This species is endemic to the temperate waters off southern Namibia and western South Africa. It is benthic in nature and inhabits shallow, inshore waters and favors rocky reefs and kelp forests ...
This species is endemic to the temperate waters off the coast of South Africa. This common shark is found on or near the bottom in sandy or rocky habitats, from the intertidal zone to a depth of 130 m (430 ft). Typically reaching 60 cm (24 in) in length, the puffadder shyshark has a slender, flattened body and head.
This species of hammerhead shark is the most recently discovered out of the ten species. It was documented by Carter Gilbert in 1967 when a specimen was caught off Charleston, SC.
Video above: Tail end of shark week celebrated at Shark Con. TAMPA, Fla. (WFLA) — Researchers have confirmed the existence of a new species of shark in South America.
The night shark (Carcharhinus signatus) is a species of requiem shark, in the family Carcharhinidae, found in the temperate and tropical waters of the Atlantic Ocean.An inhabitant of the outer continental shelf and upper continental slope, this shark most commonly occurs at depths of 50–600 m (160–1,970 ft) and conducts a diel vertical migration, spending the day in deeper water and moving ...
The term kitefin shark is also used as the common name for the type species of the family, Dalatias licha. Echinorhinidae: Bramble sharks: 1 2 Bramble sharks are usually benthic fish found in tropical and temperate waters worldwide, while the prickly shark is found in the deep waters of the Pacific Ocean. Their usual prey is small fish ...
Shark research is hard to get funding for, in part, because sharks aren’t a commercial species. Yet the irony is that they affect commercial species, namely fish populations.