1. What Is A Hammerhead Shark?-Members of the Sphyrnidae
family-Includes eight species: Scalloped Bonnethead, Winghead
Shark, Scalloped Hammerhead, Scoophead Shark, Great Hammerhead,
Bonnethead Shark, Golden Hammerhead and Smooth Hammerhead.-Set
apart from other sharks by their hammer shaped head
2. HabitatHammerhead sharks arefound in long coasts inwater up
to depths of300m and also in shallow
3. Habitat Continued-Migrate to cooler water during summer
months frequently in large masses-Found in lagoons and continental
shelves-Large gatherings found in bodies of water such as Hawaii,
South Africa, Australia - studies concluded they are highly social
and communicate through body movement including rituals such as
shaking the head and pushing other with their bodies
4. Feeding Information-Prey on many different speciessuch as
fish and other types ofsharks-Stingray is most valued foodsource;
tail spine is evenconsumed (Flying cloud. 2008)-Invertebrate
prey:crabs, squid, octopus, lobsters-Bony fish:groupers, catfish,
flatfish-Great hammerheads have beenreported of eating their
ownspecies (Antonio, 2008)-Feeds at dusk along floor of
5. Body has several distinctive features-Hammerhead of a
Hammerhead-cephlafoil, meaning two wide flattened expansions that
resemble shape of hammer-Hammer shaped extensions made up of
connective tissue and supported by skeloton-Hammer shaped head
varies from each type of hammerhead including great, scalloped, and
smooth-Round eyes located on far regions of hammer head-very far
apart-Lateral expansions also include nostrils-Dorsal fins located
on shark varies in size and direction of point, all very
large-Brown to light grey on dorsal side and white underside
6. Anatomy of A Hammer Head (Stapley, 2011)
7. -Hammer heads use their body form as an advantage when
capturing live prey-They can control the angle of attack that their
head pins down prey-Highly maneuverable and can use whole body and
weight to hold onto prey- can bat down and restrain with just their
head-This plays a role in the capture of sting rays which are
animals that swim on an angle-Very quick and efficient at holding
prey in place and then consuming it-Nostrils and eyes (36 degree
view of surroundings)being spread out plays a vital role in
capturing of prey; it allows
8. Advantages to Hammer head-Optic nerves in a hammerheads
brain are reached through smell that enters each nostril
individually-Hammerheads can determine direction of smell by paying
close attention to which nostril the smell hits first since they
are so spread apart-Nostrils spread apart allows them
9. Reproduction-Slow reproduction rate-Frequently mate close to
surface of water-Yolk-sac placenta sustained in uterus-Live birth
known as viviparity-Relies on nutrition to feed unborn pup-Birth
occurs after 11 months in spring and summer- occurs in Northern
10. Specific importance to humansHammerhead sharks are highly
valued for their fins, their meat is consumed by humans and they
provide liver oil for vitamins
11. Conservation and EndangermentClassified in large coastal
species group- most vulnerable to overfishingUsually not a specific
target to fishers but often die when they are caught by gillnet or
netsCurrently considered to be endangered by the World Conservation
UnionUnder threat due to shark finning operationsPopulations are
vulnerable to fishers because of slow reproduction rateAccording to
the International Union
12. Interesting facts-Hammerhead sharks can get a sun tan from
swimming close to waters surface for an extended amount of time-
dorsal side will become darker when increased exposure to sun-Some
members of the shark family including hammerheads exert up to 8,000
pounds of force per square inch when biting their prey-These
specific sharks are wanted to make Asian fin soup that can cost
between 20 and 1,000 dollars a bowl
13. Image ReferencesPowerdinky. Baby Hammerhead. 19 Feb. 2008.
Flickr.com. Web. 20 Nov.
Hammer from Cocos Island, Costa Rica. 3 Jan 2010. Flickr.com. Web.
The depths.9 March 2009. Flickr.com. Web. 20 Nov.
Hammerhead Shark. 12 June 2007. Flickr.com. Web. 20 Nov. 2011
14. Image References Continued MaestroBen. Hammerhead. 13 Feb
2007. Flickr.com. Web. 20 Nov. 2011
Charlton. Hammerhead. 12 Oct 2008. Flickr.com. Web. 20 Nov. 2011.
Cloud. Sea World Sting Ray. 13 July 2008. Flickr.com. Web. 20. Nov.
Antonio, Charlie V. Giant Crab at Manilla Ocean Park Philippines.
19 April 2008. Flickr.com. Web . 20 Nov. 2011.
15. Text ReferencesBester, Cathleen. Great Hammerhead. Florida
Museum of Natural History. FLMH Icthyology Department, 2011. Web. 7
Evan. Sharks Follow Their Nose. Todays Science. Facts On File News
Services, July 2010. Web. 7 Oct 2011.
http:://www.2facts.com/article/s1800090Maddalena, Alessandro and
Buttigieg, Alex. The Social Lives of Hammerheads. WorldandI.com,
June 2006. Web. 1 Nov 2011.
Aiden. Sandy Plains: No Place to Hide. Great Hammerhead Shark.
ReefQuest Centre for Shark Research. Biology of Sharks and Rays,
n.d. Web. 1 Nov 2011.
Loiuse. Endangered Great Hammerhead Sharks Tracked on North
Atlantic. Earth times. Feb. 2011. Web. 7 Oct 2011.
16. Text References ContinuedPlessis, Amelia Du. Sharks: The
Hammerhead Sharks. Sharks.org. 2011. Web. 7 Oct 2011.
http://www.sharks.org.za/hammerhead-shark.html.SeaWorld Parks &
Entertainment. Sharks and Rays-Diet and Eating Habits.
SeaWorld/Busch Gardens: Animals, 2011. Web. 7 Oct. 2011.