As we all know, that dolphins are mammals. What about Sharks? Some people think that sharks are mammals too. The truth is not so. Sharks are one of the most dangerous fish in the sea. Yes, sharks are fish.
Well, without further ado, let’s take a look at why.
Is shark a fish or mammal
Sharks aren't Mammals
The main contents of the reasons can be summarized as follows: Sharks don't have the characteristics of mammals, so they are fish.
Mammalian characteristics: five phalanges, seven neck bones, hairy body, lactation, viviparous.
For example, humans, dogs, and cats are all mammals.
1. Sharks are not viviparous animals.
It's oviparous. Mammals are born live. Only two mammals hatch from eggs.
2. Sharks breathe by gills.
It breathes in the water with its gills as other fish do. As sharks swim water passes through their mouth and is pushed through their gills. The gills filter the oxygen out of the water. Gills are the organ through which fish breathe.
3. Most sharks, like most fishes, are cold blooded, or ectothermic.
Mammals are warm-blooded animals. Mammals drink milk from their mothers.
There are more than two hundred and fifty species of shark. Sharks have been around for 400 million years and play an important role in the ocean's food chain.
Sharks are fish, not mammals. Sharks play a crucial role in helping to maintain a delicately balanced ecosystem that keeps our oceans healthy.