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Marine Biology Module #6


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subphylum vertabrata
contains animals with a backbone and a spinal chord that protects the backbone
fishes that live on the bottom of the ocean
a life cycle in which creatures are hatched in fresh water, migrate to salt water when adults, and return to fresh water in order to reproduce
class agnatha
contains animals sometimes called jawless fish (hagfishes and lampreys)
class osteichtyes
contains bony fishes
bands of muscle along the sides of fishes used for locomotion
surface pigment cells that expand and contract to produce various colors
osteocytes and osteoblasts
bone-producing cells
gill rakers
projections along the inner surface of fishes' gills used for filter-feeding
class chondrichthyes
contains sharks, rays, and skates

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