Surprisingly, there are more than 440 species of shark known to man so far. However, study says there are more than 1000 species of shark where remaining 670 species are yet to be discovered by man. Here we mention you most endangered species of sharks known to man till date.
1. Daggernose Shark or the Isogomphodon oxyrhynchus has declined over 90% over the past decade off Brazil and is critically endangered.
2. Angel Shark or the Squatina squatina is now believed to be extinct in the North Sea and the northern Mediterranean. This species of shark is not found anywhere else.
3. Great White Shark or the Carcharodon carcharias is popularly known as white shark is commonly found in coastal waters. However, increase in fishing of great white shark has caused the decline.
4. Zebra Shark or the Stegostoma fasciatum or varium is a species of carpet shark is most likely to extinct in next ten years. Study says, that the number is decreasing with a spree.
5. Shortfin Mako Shark or the Isurus oxyrinchus is fairly one of the largest species of shark. Greenpace international has added this species to its sea food list and was commonly sold in local markets due to which there is a considered decline of the Mako Shark.
6. The speartooth shark or the Glyphis glyphis is an extremely rare species of requiem shark, family Carcharhinidae. It is exclusively found in fast-moving, highly turbid waters over a wide range of salinity.
7. Basking Shark or the Cetorhinus maximus is the second largest living fish after the whale shark. Over exploitation has reduced its populations to the point that some have apparently disappeared and others need protection.
8. The dumb gulper shark, Centrophorus harrissoni, is a rare and critically endangered deep water dogfish found in north and west of New Zealand.
9. The dusky shark is a species of requiem shark that can be found in tropical and warm-temperate continental seas worldwide. NMFS showed that its population had dropped to 15–20% of 1970s levels.
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