Bottlenose Dolphin

Bottlenose Dolphin

Tursiops truncatus

Size: to 12 ft

Habitat: oceanic

Notes: The largest dolphin in our waters. These occasionally stray into rivers and bays. There they are sometimes trapped in the winter, where they would die if not for the ensuing human rescue operations.

Bottlenose Dolphin
Herb Segars Photography

Black Sea Bass
Black Sea Bass

A fish is defined as a limbless aquatic vertebrate animal with fins and internal gills. There are three living classes of fish:

  • Primitive jawless fishes - class Agnatha
  • Cartilaginous fishes - class Chondrichthyes
  • Bony fishes - class Osteichthyes

These groups, although quite different from one another anatomically, have certain common features related to their common evolutionary origins or to their aquatic way of life. Fish were the earliest vertebrates, and presumably evolved from a group of aquatic lower chordates; the terrestrial vertebrates evolved from fishes.