Barnacles Live in intertidal to shallow subtidal zone

Barnacles • Live in intertidal to shallow subtidal zone • Sessile (non-mobile) • Filter feeders • Attach permanently to a hard substrate and encrust it. • Eat mostly plankton

Crabs • Decopods (10 feet) • Typically walk sideways • Benthic: intertidal to subtidal • Mostly scavengers and are omnivores. • Claws are used for clasping food and attracting mates.

Lobsters • Decopods • Benthic: Subtidal rocky or muddy bottoms • Tropical to mid-latitude waters. • Use Antennae as sensors • Have blue blood due to copper in their blood. • The green in lobster is due to a special pancreas. • Eat live prey such as small fish and molluscs. • Sometimes eat other lobsters

Shrimp • Decopod • Includes plankton such as copepods and krill • Live on muddy and rocky bottoms: Subtidal • Swim better than they walk • Important food source for fish and whales • Feed on other plankton and algae

Commercial Uses • Primarily food • Shrimp are a 50 billion dollar/year industry • Lobstering and Crabbing are also billion dollar industries. • Market price for a whole Maine lobster can range anywhere from 8 -80 dollars depending on where you buy it. • Dungeness Crab, King Crab, Snow Crab, and Blue Crab are the most popular to find in restaurants and grocery stores.