Guardian Nature School Contact Blog Project Noah Facebook Project Noah Twitter

A global citizen science platform
to discover, share and identify wildlife

Join Project Noah!
nature school apple icon

Nature School For Teachers - Fall 2020 Launch! visit nature school

Thresher Shark

Alopias pelagicus


Named for, and easily recognised by, their exceptionally long, thresher-like tail or caudal fins (which can be as long as the total body length), thresher sharks are active predators; the tail is actually used as a weapon to stun prey.


Although occasionally sighted in shallow, inshore waters, thresher sharks are primarily pelagic - they prefer the open ocean. They are known to be seen on a daily basis visiting the cleaning stations at Monad Shoal near Malapascu Island in the Philippines.

Species ID Suggestions

Sign in to suggest organism ID


Ilya Bezdelev
Ilya Bezdelev 8 years ago

Very interesting description of this quite an unusual species and an excellent shot. Love the angle too!

SamanthaCraven 8 years ago

Gorgeous! Love the angle - different from all the other Thresher shots!

Spotted by

Biliran, Philippines

Spotted on Sep 21, 2011
Submitted on Sep 23, 2011

Related Spottings

Pelagic Thresher Shark Pelagic Thresher Shark Thresher shark Pelagic thresher shark

Nearby Spottings

Giant Frogfish Cushion Star Bubble Coral Shrimp Crown of Thorns Starfish
Noah Guardians
Noah Sponsors