Fisherman holds a sea lamprey caught in Mondego river, central Portugal, March 2, 2008. They're slimy, pre-historic and considered a pest in North America meet sea lampreys, a creature that has Portuguese gourmets salivating this time of year. These freaks of nature that are neither fish, worm nor eel have survived for 360 million years, have long snake-like bodies and a sucker mouth adorned with sharp teeth worthy of any Hollywood sci-fi movie. Picture taken March 2, 2008. Reuters Pictures logo Reuters Pictures 48 months ago

Fisherman holds a sea lamprey caught in Mondego river, central Portugal, March 2, 2008. They're slimy, pre-historic and considered a pest in North America meet sea lampreys, a creature that has Portuguese gourmets salivating this time of year. These freaks of nature that are neither fish, worm nor eel have survived for 360 million years, have long snake-like bodies and a sucker mouth adorned with sharp teeth worthy of any Hollywood sci-fi movie. Picture taken March 2, 2008.