Two days ago we saw a rare creature on the water. It was a Bigeye Thresher Shark that swam around our boat a few times. A guest onboard, Pamela Dobbeck, sent me a few of her pictures.


The Bigeye Thresher Shark is a deep living fish (yes, sharks are fish and so are rays) that is sometimes caught as by-catch by fishing boats, especially by long-lining, which is in general a type of fishing that gets a lot of by-catch such as sharks, turtles, birds and dolphins. It is possible that is what happened to the one we saw since it was groggily swimming along the surface.
The one we saw was about 10ft (3 meters) or so, however this species can get 15ft (5 meters) long and they are found in all of the tropical and subtropical oceans around the world. They are considered a pelagic (eg. open water) species but also lives close to coast lines. At nighttime they tend to move closer to the surface and come up to around 300ft, whereas at daytime they go deeper, sometimes as deep as 2100ft. The big eyes that you can see on top of the fish's head are likely used to spot the outlines of prey (different kinds of fishes and squid) above it when it's down in the dark deep ocean.
They are believed to use their long caudal fin as a whip to stun prey, hence their name.
What an amazing day! It reminded me of what it's like to see one of the amazing creatures of the ocean for the first time.
Location:Maui