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Portunus pelagicus, also known as the blue crab, blue swimmer crab, blue manna crab and flower crab is a species of large crab found in the Indo-Pacific, including off the coasts Indonesia, [1] Malaysia, [2] Cambodia, [3] Thailand, [4] the Philippines, [5] and Vietnam; [6] and in the intertidal estuaries around most of Australia and east to New Caledonia.
Blue crab escaping from the net along the Core Banks of North Carolina.. 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.
Portunus is a genus of crabs which includes several important species for fisheries, such as the blue swimming crab and the Gazami crab. [3] Other species, such as the three-spotted crab are caught as bycatch. [4] Fossil of Portunus convexus. The genus Portunus contains 13 extant species and another 26 species known only from fossils.
Crabs are omnivores, feeding primarily on algae, [25] and taking any other food, including molluscs, worms, other crustaceans, fungi, bacteria, and detritus, depending on their availability and the crab species. For many crabs, a mixed diet of plant and animal matter results in the fastest growth and greatest fitness.
The order is estimated to contain nearly 15,000 extant species in around 2,700 genera, with around 3,300 fossil species. [1] Nearly half of these species are crabs, with the shrimp (about 3,000 species) and Anomura including hermit crabs, king crabs, porcelain crabs, squat lobsters (about 2500 species) making up the bulk of the remainder. [1]
Callinectes similis, sometimes called the lesser blue crab [1] or dwarf crab, [2] is a West Atlantic species of blue crab. It was described by Austin B. Williams in 1966. Description
The blue whale, considered the largest animal ever on the planet, can reach about 100 feet (30 meters) long. Marine reptiles ruled the world's oceans when dinosaurs dominated the land.
Portunus armatus (also known as Neptunus armatus) is a species of crustacean, a swimming crab in the family Portunidae found in Australia and eastwards to New Caledonia. [1] Common names include blue swimmer crabs , Blue manna , Blueys, [ 2 ] and Jennies (for females). [ 3 ]