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Shark migration patterns may be even more complex than in birds, with many sharks covering entire ocean basins. Sharks can be highly social, remaining in large schools. Sometimes more than 100 scalloped hammerheads congregate around seamounts and islands, e.g., in the Gulf of California. [42] Cross-species social hierarchies exist.
Shark teeth are strong and made of enamel. Many sharks have 3 rows of teeth. These teeth are embedded in the gums, not the jaw. [10] Sharks are born with teeth that are constantly being replaced. Teeth are replaced every two weeks, approximately. [10] The shape of the teeth determine the diet of the shark.
The presence of only one lateral keel on the tail and the lack of lateral cusps on the teeth distinguish the mako from the closely related porbeagle sharks of the genus Lamna. [ citation needed ] The shortfin mako shark is also credited as being the fastest shark in the ocean, reaching moving speeds of 50 km/h (31 mph) with bursts up to 74 km/h ...
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. [13] [26] [22] 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. [13]
The cookiecutter shark (Isistius brasiliensis), also called the cigar shark, is a species of small squaliform shark in the family Dalatiidae.This shark lives in warm, oceanic waters worldwide, particularly near islands, and has been recorded as deep as 3.7 km (2.3 mi).
Image credits: an1malpulse #5. Animal campaigners are calling for a ban on the public sale of fireworks after a baby red panda was thought to have died from stress related to the noise.
Whale sharks possess a broad, flattened head with a large mouth and two small eyes located at the front corners. [14] [15] Unlike many other sharks, whale shark mouths are located at the front of the head rather than on the underside of the head. [16] A 12.1 m (39.7 ft) whale shark was reported to have a mouth 1.55 m (5.1 ft) across. [17]
South Carolina State Park Service interpretive ranger Rachel Dunn shows an oyster shell that many people may think is a shark tooth on Thursday, March 14, 2024 at Hunting Island State Park.