Garden of Eels

This is a game about garden eels. 

Help eels to eat the right kind of plankton! There is a poisonous kind of  plankton: 

There is also a kind of plankton that brings surprise! For example, it can speed up the current, but it can also slow it down or give you extra score.

Eels are pretty cautious of their surroundings. Avoid clicking close to their head or you may scare the eel: