The man told paramedics he thought it was a bull shark.

该名男子告诉医护人员，他认为这是一个牛市鲨鱼。

This image is of the skin of the bull shark, an aggressive species that can tolerate fresh water and is thought to be responsible for many near-shore attacks.

这张照片来自于牛鲨的皮肤组织，牛鲨是一种攻击性很强的动物，能够在淡水中活动，它被认为是导致多起海滨伤人事故的元凶。