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[2] [4] The swell shark is capable of swelling by using water or air, which is stored in the stomach until released. [2] [4] When letting air out, the swell shark makes a dog-like bark. [2] [5] Swell sharks are non-aggressive and are considered harmless to humans. [3] [2] [5] Biofluorescence of the swell shark
Swellsharks are harmless to humans and generally of no economic value, but are susceptible to being caught as bycatch in artisanal and commercial fisheries. [4] Several species (e.g. C. umbratile and C. ventriosum ), are known to be extremely hardy, capable of surviving out of water for extended periods and adapting readily to captivity.
The anal fin is larger than the second dorsal fin and is rounded in juveniles, becoming more angular in adults. The large caudal fin has a distinct lower lobe and a deep ventral notch near the tip of the upper lobe. The skin is thick and made rough by widely spaced, arrowhead-shaped dermal denticles with three horizontal ridges. The dorsal ...
Bait 3D. Bait, a 2012 Australian-Singaporean film, perhaps sets up the most unique of premises in a movie involving people-hungry sharks.The movie follows a bunch of grocery store workers who are ...
The illustration that accompanied Jordan and Fowler's 1903 species description. American ichthyologists David Starr Jordan and Henry Weed Fowler described the blotchy swellshark in a 1903 volume of Proceedings of the United States National Museum, based on a 98 cm (39 in) long stuffed dry skin originally obtained from Nagasaki, Japan.
He says: “People are very recent on the planet compared to sharks. Humans, 2 million years, even the ancestor of chimps and ourselves only takes it back to 6 million years ago, while sharks go ...
In general, sharks show little pattern of attacking humans specifically, part of the reason could be that sharks prefer the blood of fish and other common preys. [107] Research indicates that when humans do become the object of a shark attack, it is possible that the shark has mistaken the human for species that are its normal prey, such as seals.
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