What is an example of an exothermic organism?

Hi. Around the deep water vents exist organisms that thrive in the heat of super heated water. But any cold blooded creature is exothermic. Snakes are a good example. They control there body heat by using an external heat source. Sunlight by day and warm surfaces by night.

An exothermic organism is cold- blooded and it's body temperature shifts depending upon the temperature of it's surrounding environment, for example a fish. An endothermic organism is a warmblooded organism that maintains a certain temperature inside the body no madder what its surrounding environments temperature is, for example humans.