| Sea Lampreys (Petromyzan Marinus) are eel-like jawless fish which are widely distributed throughout fresh-water streams and seas of temperate and subartic regions. Sea lampreys spawn and undergo a sedentary phase in freshwater, but migrate to marine waters in the adult phase where they eat as a parasite. The mouth of the sea lamprey is jawless with numerous pointy teeth to attach to its host and a tongue that is used to create suction. The lampreys lack bone; their skeleton is completely cartiliginous. Sea lampreys are a major source of problems in the Great Lakes where they are endangering the food chain. |
