Invertebrate

Animals that are invertebrate do not have a backbone. According to Britannica.com, "more than 90 percent of all living animal species are invertebrates." 

Insects are also included under this classification.

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Insects are also included under this classification.

Mud Snail | The Salt Marsh
Mud Snail | The Salt Marsh

Video

The mud snail is black, with a very strong shell, and is about 1/2 inch in length. It is an effective scavenger and hundreds of snails will collect around a dead fish or shrimp bait until they...
Shrimp | The Salt Marsh
Shrimp | The Salt Marsh

Photo

Three different species of shrimp are collected commercially from offshore and from the salt marsh. They are the pink shrimp, the brown shrimp, and the white shrimp. They are large, up to 10 inches in...
Blue Crabs | The Salt Marsh
Blue Crabs | The Salt Marsh

Photo

Blue crabs are active predators and effective scavengers. They occur throughout the estuary. They can swim by using their last pair of legs, which have been modified into paddles instead of walking...
Male Fiddler Behavior | The Salt Marsh
Male Fiddler Behavior | The Salt Marsh

Video

Male fiddler crabs have one large claw, which can be either their left or right. They wave these large claws at other males to frighten them away from their territory. When they wave the claw, they...
Bulls Island (S.C.) Stop 5 - The Ghost Beach
Bulls Island (S.C.) Stop 5 - The Ghost Beach

Video

“Ghost Beach” - Rudy and Jim further assess the damage to the island by Hurricane Hugo. The pines and live oaks at the shore line are gone, but the Palmetto trees survived. The water is slowly eroding...