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→Environmental Concerns
*Requiem sharks (Carcharhinidae, 52 species)
*Requiem sharks (Carcharhinidae, 52 species)
*Hammerhead sharks (Sphyrnidae, 9 species)
*Hammerhead sharks (Sphyrnidae, 9 species)
== Worse shark attacks situation in history ==
The sinking of the USS Indianapolis is considered to be the worst case of shark attacks in history.<ref>[https://www.smithsonianmag.com/history/the-worst-shark-attack-in-history-25715092/ The Worst Shark Attack in History], Smithsonian website</ref> Most of the shark-related causalities came from oceanic whitetips which are one of the most aggressive types of sharks.<ref>[https://www.smithsonianmag.com/history/the-worst-shark-attack-in-history-25715092/ The Worst Shark Attack in History], Smithsonian website</ref>
==Environmental Concerns==
==Environmental Concerns==
Worldwide, sharks suffer threats from over-fishing, mercury poisoning, ocean acidification, and habitat disruption.<ref>http://www.ceibahamas.org/shark-ecology.aspx</ref> Many individual shark species are currently threatened or endangered, often because of human activities such as careless fishing practices and coal fired plants dumping tones of toxic mercury into the oceans.
Worldwide, sharks suffer threats from over-fishing, mercury poisoning, ocean acidification, and habitat disruption.<ref>http://www.ceibahamas.org/shark-ecology.aspx</ref> Many individual shark species are currently threatened or endangered, often because of human activities such as careless fishing practices and coal fired plants dumping tones of toxic mercury into the oceans.
==References==
==References==
<references/>
<references/>
[[Category:Sharks]]
[[Category:Sharks]]