Tresher Shark

The Thresher Shark is also known as the Alopias Vulpinus or Fox Shark. Its name comes from the sharks unusually large tail (caudal fin), which is in most cases, as long as the shark itself!

It’s origin is also surrounded by mystery. Most likely, the closer relative of the Fox Shark is the Megamouth Shark. Scientific studies are ongoing to try and resolve the many mysteries that surround this unusual and unique fish.

The largest known Thresher Sharks reach a length of more than 6 meters (20ft) and weigh 600 kilograms (216 pounds). Bigeye Threshers are normally the largest with Pelagic Threshers being the smallest.

These are slow growing sharks. They reach their maturity between 8 and 13 years old and live about 22 years. Again, there is quite a bit of mystery here. Some believe this shark is capable of living much longer, but simply hasn’t been verified.

In addition to electro receptors that all sharks have, which gives them they ability to detect electrical impulses from living creatures, they also have an extraordinary heat exchanger system. They’re called “endoderms”, which means that they have special thermoregulation. In other words, they produce heat through an internal body mechanism such as enhancing their metabolism and muscle shivering. This is largely a unique feature in Thresher Sharks.

These are very athletic sharks. They are known for slaying their prey with their huge tails and are famous for special jumping techniques and behavior called “breaching” where they jump out of the water and into the air.

While hunting, they launch themselves with their whole body out of the water and perform wild turns. They love to hunt schools of fish in the open Ocean waters and prefer Tuna, Mackerels, and sometimes go after certain breads of Seabirds.

The largest threat to the Thresher Shark is human fishing. Many fisherman catch them for sport, while others catch them for their fins, liver oil, tails, and flesh.

Due to recent population depletion, new laws are being enacted to help protect this species from upsetting the fragile balance of the marine ecosystem, especially since these sharks have a low reproductive rate as compared to other sharks.

This species poses very little threat to humans. The largest threat of injury is divers getting hit with the enormous tail. Attacks of any kind on humans are almost UNHEARD of.

AMED Fun divers bali

Amed Fun Divers Bali is a serious dive school based in Amed Bali offering full range of quality diving courses.

It is an Instructor Training Center, CCR Service Center with CCR user and instructor courses available, it is fully equipped for sidemount diving and DPV user as well.

Only small dive groups are allowed in Fun Divers Bali, own compressor, large training pool, dive equipment renewed every 6 months, you can find the best facility here in Amed.


Amed, Jl. Raya Amed No.10, Purwakerti, Abang, Kabupaten Karangasem, Bali 80852

+62 813 3753 3339 EN/ES/DE/FR

+62 812 3990 5318 CN/EN

+62 877 6221 9500 BAHASA/EN

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