Adult males are 5 to 7 meters long and weigh up to one ton record specimens measured up to 10 meters and weighed more than one ton. Females are smaller, measuring about 3 meters. They are black, brown or gray. Their skin is very thick and covered with firm pads. Scales on the back are armored by bone plates - osteoderma. On the tail he has two rows of upside-down bone tags. They have strong jaws in which they have 13 cm long teeth. They use their tails to swim, even though they have membranes between their toes. She closes her nostrils at the dive, but can`t get water out of her mouth. Therefore, it has a valve at the entrance to the throat - it only opens when the food is swallowed.

圖片編號： 156466550
拍攝者： Mirosk