Hello to all our dolphin fans

This month we will talk about the Cetaceans family and what makes them mammals.
Cetaceans are a series of sea mammals that includes whales, porpoises and dolphins.
There are about 90 species of cetaceans; all of them live in the oceans except 5 species of dolphins that live in fresh water environments.
 
Cetaceans are divided into tow main subcategories, the first one are the Baleen whales; this subcategorie include some of the biggest whales and mammals on earth.
The Baleen whales are characterized by there size and the baleen they have instead of teeth , they filter the water and eat the fish , plankton and other nutrition’s that get stuck in their “filter” ,the baleen.




The other series are the toothed whales.
This group of mammals includes all the sea mammals that are characterized by having teeth that they use to hunt and for self defiance.
This group includes dolphins, porpoises and some species of whales. 
All cetaceans have 5 characteristic that are common to every sea mammals and indicates that they are infect mammals:

1. All sea mammals have a steady body temperature.
2. All sea mammals depend on placenta and umbilical cord while developing in their mother’s uterus.
3. All sea mammals give birth to live babies that suckle milk.
4. All sea mammals breath air.
5. All sea mammals are born with soma hair.

Our bottlenose dolphins answer all this criterions, they breath air from there blowhole that is located on the upper side of the head, they are born with mustache hair that falls after a few days, they have a steady body temperature, and they suckle milk from there mother for approximately tow to three years. 

We hope you enjoyed this information
See you next month
The dolphin teem