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The megamouth is considerably less active than the other filter-feeding sharks, the basking shark and the whale shark. The megamouth has a stout body and a long, wide bulbous head. Megamouths are large sharks, able to grow to 5.49 metres (18 ft 0 in) in length. [16] [17] [18] Mature males average at 4 m (13 ft) and females at 5 m (16 ft).
Similar to white sharks, salmon sharks have a slow growth and reproduction rate, making them susceptible to overfishing and overexploitation. They are considered least concern, however juvenile salmon sharks are extremely susceptible to temperature changes in coastal waters. This means that further ocean warming can severely impact the species.
Greenland sharks have also been found with remains of moose, polar bear, horse, and reindeer (in one case an entire reindeer body) in their stomachs. [26] [27] [28] The Greenland shark is known to be a scavenger and is attracted by the smell of rotting meat in the water. The sharks have frequently been observed gathering around fishing boats. [26]
In the ocean food chain, large sharks generally only have to worry about keeping orcas at bay — but a new study suggests the apex predators may have to watch out for their own.. Researchers have ...
The sound source is traveling at 1.4 times the speed of sound, c (Mach 1.4). Because the source is moving faster than the sound waves it creates, it actually leads the advancing wavefront. The sound source will pass by a stationary observer before the observer actually hears the sound it creates.
Ever since the movie "Jaws" popularized great white sharks as predatory man-killers, people have had misconceptions about these animals. That is why researchers have been doing everything they can ...
This week, learn why Greenland sharks can live for centuries, discover when Neanderthals and humans met, see the most volcanic world in our solar system, and more. An elusive creature of the deep ...
Sharks are used in popular culture commonly as eating machines, notably in the Jaws novel and the film of the same name, along with its sequels. [121] Sharks are threats in other films such as Deep Blue Sea, The Reef, and others, although they are sometimes used for comedic effect such as in Finding Nemo and the Austin Powers series. Sharks ...