The Ocellate Swimming Crab, scientifically known as Achelous sebae, is a captivating crustacean found in diverse marine environments. This crab’s unique characteristics and intriguing behavior have made it a subject of fascination for both scientists and nature enthusiasts.
Description & Characteristics
The Achelous sebae is readily identifiable by its distinctive ocellated markings, resembling eyespots, on its carapace. These markings, along with its flattened body and prominent claws, contribute to its striking appearance. The Ocellate Swimming Crab can grow to a considerable size, reaching a maximum carapace width of approximately 15 centimeters. The carapace itself is typically brown or greenish-brown in color, blending seamlessly with its surroundings.
Habitat and Occurrence
The Ocellate Swimming Crab, Achelous sebae, prefers to inhabit shallow coastal waters, particularly in areas with sandy or muddy bottoms. They are commonly found in the intertidal zone, as well as in estuaries and mangrove swamps. This crab’s adaptability allows it to thrive in a range of marine zones, including the neritic zone, which encompasses the coastal waters extending from the shoreline to the edge of the continental shelf. The Achelous sebae can be found in a wide geographical distribution, inhabiting the tropical and subtropical regions of the Atlantic Ocean, including the Caribbean Sea and the Gulf of Mexico. Their presence in these regions is a testament to their ability to adapt to different environmental conditions.
Taxonomy
The species Achelous sebae belongs to the Class: Malacostraca, Order: Decapoda, and Family: Portunidae. This classification places it within a diverse group of crabs characterized by their flattened bodies, prominent claws, and swimming adaptations. The Portunidae family, commonly known as the swimming crabs, are renowned for their agility in the water, using their flattened limbs to propel themselves through the marine environment.
Feeding
The Achelous sebae is a carnivore and predatory species, feeding primarily on a variety of mollusks, crustaceans, and other small invertebrates. Its powerful claws are well-suited for crushing and breaking open the shells of its prey. This hunting strategy allows the Ocellate Swimming Crab to effectively capture and consume a range of food sources within its habitat.

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