Sharks identified by a long snout bearing variably-sized teeth on either side, similar in appearance to [[sawfish]].
*Sawsharks (Pristiophoridae, 6 species)
====[[Squatiniformes]]====
Identified by their flattened, ray-like appearance, lack of anal fins, and the lower lobe of the tail fin longer than the upper lobe.
*Angelsharks (Squatinidae, 16 species)
Sharks which have a characteristic pig-like snout, short face, and bovine-like ridges above the eyes. All species have a spine in front of their dorsal fins.
*Bullhead sharks (Heterodontidae, 9 species)
====[[Orectolobiformes]]====
[[File:Zebra shark.jpg|right|200px|thumb|Zebra shark (''Stegostoma fasciatum'')]]
Carpet sharks, so-named for the intricate patterns resembling oriental carpeting. Most species are small bottom dwellers; the exception is the whale shark (''Rhincodon typus''), at up to 60 feet in length it is the largest living fish.
*Hammerhead sharks (Sphyrnidae, 9 species)
== Worse shark attacks situation case in history : Sinking of USS Indianapolis ==
The sinking of the USS Indianapolis is considered to be the worst case of shark attacks in history.<refname="The Worst Shark Attack in History">[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.<refname="The Worst Shark Attack in History"/>[ Of the 1,195 crewmen aboard the USS Indianapolis, about 300 went down with the ship.<ref name=NPRNeuman20180323>{{Cite news |last=Neuman |first=Scott |title=Navy Admits To 70-Year Crew List Error In USS Indianapolis Disaster |url=https://www.smithsonianmagnpr.comorg/historysections/thethetwo-worstway/2018/03/23/596360408/navy-sharkadmits-attack70-year-crew-list-error-in-historyuss-25715092indianapolis-disaster|work=NPR.org |date=23 March 2018 |language=en |access-date=24 March 2018}}</ ref> === USS Indianapolis: Excerpt of a sermon related to the phrase "There are no atheists on a sinking ship" === ''See also:'' [[There are no atheists on a sinking ship]] and [[Edgar Harrell]] [[File:Oceanic whitetip shark at Elphinstone Reef.jpg|thumbnail|right|200px|The USS Indianapolis is considered to be the worst case of shark attacks in history.<ref name="The Worst Shark Attack in History"/> Most of the shark-related causalities came from oceanic whitetips which are one of the most aggressive types of sharks.<ref name="The Worst Shark Attack in History"/> ]]Of the 1, Smithsonian 195 crewmen aboard the [[USS Indianapolis]], which sank due to a torpedo attack, only 300 survived.<ref name=NPRNeuman20180323/> The websiteSermon Central gives the following excerpt of a sermon:{{Cquote|NO [[Atheism|ATHEISTS]] IN THE WATER David Harrell wrote a book telling the story of his father, [[Edgar Harrell]]. Edgar was one of the 300 survivors of the sinking of the USS Indianapolis, the last US ship sunk by enemy contact in WW2. 600 of the 900 men who survived the ship's sinking were stranded in the water for five days - many with only a life vest - all facing thirst, hunger, injuries, dehydration and [[sharks]]. They all came face to face with fear and their own mortality. Edgar testifies of those days alone in the ocean, 'Clearly there were no atheists in the water that day. Gone was that damnable attitude of pride that deceives men into thinking that there is no God...'<ref>[https://www.sermoncentral.com/sermon-illustrations/83155/no-atheists-in-the-water-by-paul-barreca No Atheists In The Water], Sermon Central</ref>}} === Video of Edgar Harrell, USS Indianapolis Survivor === *[https://www.youtube.com/watch?v=KOAg3wCkOkI Edgar Harrell, USS Indianapolis Survivor] - video === USS Indianapolis National Memorial ===[[File:USS Indianapolis (CA-35) Memorial (1).jpg|center|thumbnail|200px|USS Indianapolis National Memorial]]{{Clear}}
==Environmental Concerns==