The European Eel
The European Eel has a snake like body, with only one pair of fins, which are situated behind the head. Its tail is continuos and acts as the main fin. Its colour varies but is always dark on the back and pale on the belly. They are notable foe their extreme migration to the Atlantic Ocean, where the female eel lays her eggs. At the age of 3 years, the baby eels migrate from the Atlantic Ocean and travel upstream into Europe. Their life span is about 30 years in the wild, but have been known to live up to 60.
The female Eels tend to live longer. Their numbers are seemingly in a dramatic decline.