Feb 20, 2025 · Blue crabs are a keystone species in the Chesapeake Bay ecosystem. Learn about the status and management of these marine invertebrates.

Jan 23, 2025 · Dungeness crab inhabit a wide variety of ocean floor habitats, but they generally prefer sandy- or soft-bottom areas and are commonly found at depths ranging from the intertidal to 300 feet (91.4 meters) but may occupy depths as deep as 750 feet.

Mar 20, 2025 · The Atlantic deep-sea red crab is found in deep waters of the western North Atlantic from Nova Scotia to North Carolina, and in the Gulf of Mexico. Learn about the status and management of red crab.

Oct 19, 2023 · In 2022, the Alaska snow crab fishery was closed for the first time in history due to a sudden, dramatic decline in adult and juvenile crabs. Scientists now believe the most likely cause of the decline was starvation and other factors linked to the 2018–2019 marine heatwave.

Horseshoe crabs are ancient marine arthropods inhabiting the Atlantic coast from northern Maine to the Yucatan Peninsula and the Gulf of Mexico, with the Delaware Bay hosting the largest global spawning population.

Between 2023 and 2024, the abundance of adult (age 1+) female blue crabs in the Chesapeake Bay decreased 12.5% from 152 million to 133 million. This number is lower than the target of 196 million, but well above the 72.5 million threshold that is considered to be the minimum sustainable level for female blue crabs in the Bay.

Scylla serrata (often called mud crab or mangrove crab, although both terms are highly ambiguous, and black crab) is an ecologically important species of crab found in the estuaries and mangroves of Africa, Australia, and Asia. In their most common forms, their shell colours vary from a deep, mottled green to very dark brown.

Callinectes sapidus (from the Ancient Greek κάλλος,"beautiful" + nectes, "swimmer", and Latin sapidus, "savory"), the blue crab, Atlantic blue crab, or, regionally, the Maryland blue crab, is a species of crab native to the waters of the western Atlantic Ocean and the Gulf of Mexico, and introduced internationally.

The Maryland Fish & Wildlife Conservation Office has been coordinating a coast-wide tagging program for horseshoe crabs since 1999. Crabs have been tagged by researchers and biomedical companies conducting numerous studies on horseshoe crabs along the Atlantic Coast.

The horseshoe crab is not actually a true crab, but a member of an ancient group of arthropods, closely related to spiders and scorpions. There are four species of horseshoe crabs around the world and only one in North America.