Sessile free swimming colony above and larvacean

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Unformatted text preview: -swimming colony above and larvacean (solitary) below) larvacean has a head-like structure and a long tail (postanal: nerve cord and notochord) Vertebrates have colonized a wide variety of environments slime eels the slime protects them Hagfishes: no jaws + have notochord scavengers on dead animal carcasses have notochord through out their life •! no bone, no jaws •! tongue with rasping teeth •! can tie themselves in knot for greater leverage when tearing food from prey feed on dead carcasses •! produce copious amounts of slime •! have a notochord Lamprey: bloodsucking parasite of fish! •! no bone, no jaws •! sucker-like mouth and rasping teeth •! larvae are mud-dwelling filter feeders as an adult it becomes ectoparasite: hang on to the outside of a fish w/ sucker like mouth suck out the fluid (blood) of the fish...
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