Lamprey
Videos
Lampreys are a group of jawless fish composing the order Petromyzontiformes, sole order in the class Petromyzontida. The adult lamprey is characterized by a toothed, funnel-like, sucking mouth. The co
Mouth of a sea lamprey, Petromyzon marinus
Median section of lamprey demonstrating internal anatomy
The cartilaginous skeleton of a lamprey washed up on a beach in North Carolina.
Hagfish
Videos
Hagfish, of the class Myxini and order Myxiniformes, are eel-shaped jawless fish. Hagfish are the only known living animals that have a skull but no vertebral column, however they do have rudimentary
Two views of the hagfish (Myxini glutinosa) with analytical overlays and dissection, published 1905
Pacific hagfish at 150 m depth, California, Cordell Bank National Marine Sanctuary
An Atlantic hagfish (Myxine glutinosa) using its slime to get away from a kitefin shark (Dalatias licha) and an Atlantic wreckfish (Polyprion americanus)
Pacific hagfish trying to hide under a rock