Algae are simple plants that lack roots, stems, leaves and a vascular system. Some algae are tiny, single-celled plants that cannot be seen with the naked eye. Others are multi-cellular and grow in clumps or slimy mats.
Hundreds of species of birds live in the Chesapeake Bay watershed and are some of the region's most beautiful—but vulnerable—species. Some live here year-round, while others migrate here to feed or nest.
Nearly 350 species of fish live in the Chesapeake Bay. Some fish are year-round residents, while others swim into the Bay from the ocean to feed, reproduce or find shelter.
Thousands of species of insects live in the Chesapeake Bay region, in nearly every habitat. Insects serve as a major food source for larger animals, including fish, birds, mammals and reptiles.
Invertebrates are animals without a backbone. Some, like oysters and blue crabs, are easy to recognize. But others like worms and copepods, some of the most abundant animals in the Bay, are rarely seen by humans.
Mammals are warm-blooded vertebrates that give birth to live young and are covered with hair at some point in their lives. A diverse range of mammals are found in Bay region, both on land and in the water.
More than 2,700 types of plants grow throughout the Chesapeake Bay region, in nearly every habitat: from upland forests to the Bay's shoreline to our own backyards. Plants help keep our air and water clean and provide habitat for countless animals.
Reptiles and amphibians, sometimes called herps, are cold-blooded vertebrates. Hundreds of species live in the Chesapeake region: from salamanders that dwell along mountainous streams to sea turtles that visit the salty waters of the lower Bay.
Aquatic reefs are complex, diverse communities made of densely packed oysters. With their many nooks and crannies, reefs provide a safe haven for small fish and invertebrates to hide from predators.
Healthy forests provide food, shelter, nesting areas and safe migration paths for countless species. And forests don't just benefit animals on land—they're also critical to aquatic species.
Wetlands are transitional areas between land and water. Thousands of species like worms, insects, and tiny crustaceans thrive in wetlands, in turn serving as food for larger fish, birds and mammals.
Hundreds of thousands of streams, creeks and rivers thread through the watershed and eventually flow to the Bay. Some species live their entire lives in fresh water, while others travel from the Bay and the ocean to spawn.