Hammerhead Shark
Transcript: Bibliography The hammer head shark has a streamlined body to help it swim quickly- it can swim about 35 kph and even faster over short distance. Sharks are well camoflagued to the bottom of the ocean, where they spend a lot of time. The hammerhead shark also has denticles, which are similar to tiny teeth, embedded all over its skin. If a fish rubs against these it will instantly be injured. Symbiotic relationships Protection from Environment Food Web How intriging... Habitat Fish The Hammerhead Shark is a top consumer or 4th order consumer, unless you included humans in this food web. humans would become the top consumer. Hammerhead sharks feed through their mouth, which is just under their unusually shaped head, or cephalofoil. Hammerhead sharks kill stingrays by using the ‘hammer’ to pin the stingrays down. They then feed on the sting rays wings. Cleaner fish and sharks have a symbiotic relationship. The Cleaner fish eneters the sharks mouth and clears the mouth of parasites that live there. The shark benefits because the parasites are removed and the cleaner fish benefits because they receive food. Breeding Eating Plankton Octopus Hammerhead sharks will attempt to fight off and kill other organisms as a way of protection. It often uses its ‘hammer’ to try and pin down and kill the organism attacking it. Crabs The Sun Hammerhead sharks eat a variety of things including fish, rays, squid, octopus, crustaceans, other sharks and even humans! They love stingrays and other batoids. They are sometimes known to eat their young, as well, but for unknown reasons. There are 9 species of hammerhead shark: Great Hammerhead (Sphyrna mokarran) Scalloped Hammerhead (Sphyrna lewini) Bonnethead or Shovelhead (Sphyrna tiburo) Smooth or Common Hammerhead (Sphyrna zygaena) Scoophead shark (Sphyrna media) Scalloped Bonnethead (Sphyrna corona) Winghead shark (Sphyrna blochii) Smalleye Hammerhead (Sphyrna tudes) Whitefin Hammerhead (Sphyrna couardi) Parasites Hammerhead Shark Hammerhead sharks have cephalofoil, which are their heads. Scientists have many explanations for the existence of this cephalofoil. They think that it may increase manoeuvring skills or possibly help this organism catch the optimum amount of prey. Another hypothesis is that it maximizes the search area using electro sensory. Bacteria Diet Reproduction Crusaceans Predetors Where the species are found Dead animal skin Female hammerhead sharks give birth to live pups. Great Hammerheads can have 20-40 pups but other hammerheads give birth to 12-15. It can be 10-12 months before the hammerhead gives birth. The pups are already developed enough to be left by themselves, so the parents leave them to survive on their own. Hammerhead Shark By Emma Hunter Species Hammerhead sharks live in warm tropical waters. They are able to survive a range of 3 to 262 feet of salt water. They also enjoy shallow, coastal waters, such as water over lagoons. During summers they migrate south. Survival Features Larger sharks can sometimes attack small or injured hammerhead sharks, but there are no major predators for the adult Hammerheads. The scalloped hammerhead is found around northern Australia, the great hammerhead is found worldwide, Bonnetheads are found in the western Atlantic and eastern pacific oceans, the smooth hammerhead is found in Canada, unlike its cousins. The Whitefin is found in the eastern Atlantic ocean. Hammerhead sharks gather into large shoals, with the large females who can bear more young in the centre. Females outnumber males 6 to 1 so the males have a wide range of mating partners to choose from. That evening the partners leave the shoal and mate. An interesting fact is that the male grabs their partner with their teeth, leaving bite marks on the females side which stay there for years. Hammerhead sharks are born with their head bent backwards so they do not get stuck in the birth canal. Their eyes are almost a meter apart! Protection from other organisms American Physiological Society. (?). Hammerhead Shark's Head. Available: http://www.light-science.com/hammerhead.html. Last accessed 13th June 2011. Barrack Heights. (2001). Sea Creatures. Available: http://www.barrackht-p.schools.nsw.edu.au/seareports.htm. Last accessed 11th June 2011. Bone, M. (2011). How Do Sharks Protect Themselves?. Available: http://www.ehow.com/how-does_4567351_sharks-protect-themselves.html. Last accessed 11th June 2011. Col, J. (2010). Hammerhead Shark. Available: http://www.enchantedlearning.com/subjects/sharks/species/Bonnethead.shtml Last accessed 21st June 2011. Col, J. (2010). Hammerhead Shark. Available: http://www.enchantedlearning.com/subjects/sharks/species/Hammerhead.shtml. Last accessed 21st June 2011. Dive The World. (2011). Scalloped Hammerhead Shark. Available: http://www.dive-the-world.com/creatures-scalloped-hammerhead-sharks.php. Last accessed 8th June 2011. Gluco, D. (1998). Symibiotic Relationships in Coral Reefs. Available:
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