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The bonnethead (Sphyrna tiburo), also called a bonnet shark or shovelhead, [3] is a small member of the hammerhead shark genus Sphyrna, and part of the family Sphyrnidae.It is an abundant species in the littoral zone of the North Atlantic and the Gulf of Mexico, is the only shark species known to display sexual dimorphism in the morphology of the head, and is the only shark species known to be ...
This shark was estimated to be more than 6.9 m (23 ft) long by Peter Resiley, [67] [73] and has been designated as KANGA. [72] Another great white shark was caught in Malta by Alfredo Cutajar on 16 April 1987. This shark was also estimated to be around 7.13 m (23.4 ft) long by John Abela and has been designated as MALTA.
Such a shark aumakua becomes the family pet, receiving food, and driving fish into the family net and warding off danger. Like all aumakua it had evil uses such as helping kill enemies. The ruling chiefs typically forbade such sorcery. Many Native Hawaiian families claim such an aumakua, who is known by name to the whole community. [113]
The cookiecutter shark regularly replaces its teeth like other sharks, but sheds its lower teeth in entire rows rather than one at a time. A cookiecutter shark has been calculated to have shed 15 sets of lower teeth, totaling 435–465 teeth, from when it was 14 cm (5.5 in) long to when it reached 50 cm (20 in), [ 11 ] a significant investment ...
[23] [15] A study looking at the growth and longevity of the basking shark suggested that individuals larger than ~10 m (33 ft) are unlikely. [24] This is the second-largest extant fish species, after the whale shark. [4] Beached basking shark. They possess the typical shark lamniform body plan and have been mistaken for great white sharks. [25]
The hammer-like shape of the head means that hammerhead sharks can sweep for prey more effectively. The hammerhead sharks are a group of sharks that form the family Sphyrnidae, named for the unusual and distinctive form of their heads, which are flattened and laterally extended into a cephalofoil (a T-shape or "hammer").
In this screen capture, Jill Horner a recent transplant to the area from Buffalo, N.Y., captured video of a shark swimming off Hilton Head Island on Sept. 4, 2022, Labor Day weekend.
A leopard shark at the Monterey Bay Aquarium; this species adapts well to captivity. Wary and quick to flee, leopard sharks pose almost no danger to humans. There is a single record from 1955 of a leopard shark harassing a skin diver with a nosebleed, though no injuries resulted.