Acadia National Park - Intertidal and Subtital Zones

Acadia National Park by National Parks Service

With over forty miles of rocky shoreline, Acadia National Park possesses a tremendously rich intertidal flora and fauna. Twice daily, the nutrient-rich marine waters cover these plants and animals. However, during the lower stages of the 10- to 12-foot tidal range, the ocean leaves behind pools of water inhabited by sea stars, dog whelks, blue mussels, sea cucumbers, rockweed, and other creatures and plants.

The coastal ocean waters surrounding Acadia are home to countless other animals, from clams and sea urchins to the commercially-prized lobster. Gulls and other seabirds wheel overhead, and marine mammals such as seals, whales, and porpoises often frequent the area. In the Gulf of Maine, species ranging from tiny phytoplankton to large fish make up the diverse yet precarious food web.