[12] By distributing the receptors over a wider area, like a larger radio antenna, hammerheads can sweep for prey more effectively. After birth, hammerheads do not give parental care to pups, which group together in warm water until such a time that they are able to defend and fend for themselves. Hammerhead sharks are some of the strangest looking animals on this Earth. Hammerhead Shark. Some larger species like the Great Hammerhead practice cannibalism, as they eat other smaller hammerheads and their own young. January/February, our biggest and busiest fishing season, brought multiple... Papagayo Fishing Report March/April 2020 The hammerhead’s eyes are positioned on the sides of the shark’s flattened “hammer” head, which gives it 360-degree vision — in other words, the hammerhead can see above and below at all times. In addition, these animals can be … [32] Nevertheless, at up to 1.5 m (5 ft) in length and with highly specialized requirements, very few private aquarists have the experience and resources necessary to maintain a bonnethead in captivity. When the supply of yolk is exhausted, the depleted yolk sac transforms into a structure analogous to a mammalian placenta (called a "yolk sac placenta" or "pseudoplacenta"), through which the mother delivers sustenance until birth. This was the first shark known to do this. A hammerhead shark is any of the ten species that make up the Sphyrnidae family. However, some sharks are considered man-eaters, also known as niuhi.

Most hammerhead species are placed in the genus Sphyrna, while the winghead shark is placed in its own genus, Eusphyra. Fishing Reports Brought to you by Coastal Angler Costa Rica Edition The eyes can rotate for a 360-degree vision and one eye can see below while the other sees up simultaneously, however, the positioning of the eyes create a blind spot in front of the nose. Hammerhead sharks reside in the warm tropical waters along continental shelves and coastlines of the world; however, they usually migrate in mass to cooler waters during summers and to warmer waters during winters. By Rick Graham • Dream On Sportfishing [39][40][39], "Record Hammerhead Pregnant With 55 Pups", "Marine Species ID: Great Hammerhead vs. Scalloped and Smooth Hammerhead", "Hammerhead shark study shows cascade of evolution affected size, head shape", "Enhanced visual fields in hammerhead sharks", "This Shark Eats Grass, and No One Knows Why", "IUCN Red List of Threatened Species: Eusphyra blochii", "IUCN Red List of Threatened Species: Sphyrna corona", "IUCN Red List of Threatened Species: Sphyrna lewini", 10.2305/IUCN.UK.2006.RLTS.T60201A12317805.en, "IUCN Red List of Threatened Species: Sphyrna mokarran", "IUCN Red List of Threatened Species: Sphyrna tiburo", "IUCN Red List of Threatened Species: Sphyrna tudes", "IUCN Red List of Threatened Species: Sphyrna zygaena", "Statistics on Attacking Species of Shark", "Panamanian officials find half ton of shark fins", Sharks Highly respected in Hawaiian Culture, "Babies Of The S.E.A. Like other sharks, fertilization is internal, with the male transferring sperm to the female through one of two intromittent organs called claspers.  By Alberto Gutierrez • Pura Pesca Costa Rica   [38], Among Torres Strait Islanders, the hammerhead shark, known as the Beizam, is a powerful totem, and often represented in cultural artefacts such as the elaborate headdresses worn for ceremonial dances, known as dhari or dari. During the day, they swim in schools (mostly between 100 and 500 members) but become solitary hunters at night.
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