Sea lamprey (Petromyzon marinus), Cayuga Lake, New York, parasitic lamprey found on Atlantic coasts of Europe and North America
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Photo credit: © John Cancalosi / Alamy / Afripics
License: Licensed
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Keywords: agnatha, ancient, blood, cartilaginous, control, cyclostome, cyclostomes, fish, horrendous, horror, jawless, parasite, parasitic, pest, primitive, suck, teeth, ugly