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Giant isopods are a good example of deep-sea gigantism (cf. giant squid), as they are far larger than the "typical" isopods that are up to 5 cm (2.0 in). Bathynomus can be divided into "giant" species where the adults generally are between 8 and 15 cm (3.1 and 5.9 in) long and "supergiant" species where the adults are typically between 17 and ...
Bathynomus vaderi can be up to 12.8 inches (0.325 m) in length and 2.2 pounds (0.997 kg) in weight, [4] and is one of the largest known species of isopods. [5] The species is predicted to have a similar habitat to the other giant isopod species Bathynomus jamesi. [2]
It is a member of the giant isopods (Bathynomus), and as such it is related—albeit distantly—to shrimps and crabs. [2] It was the first Bathynomus species ever documented and was described in 1879 by French zoologist Alphonse Milne Edwards after the isopod was found in fishermen's nets off the coast of the Dry Tortugas in the Gulf of Mexico .
Like all giant isopods, of which there are around 20 species, B. Vaderi is a carnivore and prefers feeding on crustaceans, fish, squid, and even whale carcasses.
The impressive size of B. vaderi makes it one of the world's largest isopods, but it is still dwarfed by the largest known Bathynomus, which measures more than 19 inches.
B. brucei is the largest 'giant' member of Bathynomus, a specimen collected 400 metres below sea level measuring 154 mm (6.1 in) long. [1] Members of the larger 'supergiant' group of Bathynomus species such as B. giganteus and B. kensleyi are known to grow to lengths of almost 20 in (510 mm). [3]
A species of giant isopod, Bathynomus vaderi, has been named following its harvesting in the waters off Vietnam. According to scientists who wrote about the giant crustacean in the journal ZooKeys ...
Isopods vary in size, ranging from some Microcerberidae species of just .3 millimetres (0.012 in) to the deep sea giant isopod Bathynomus spp. of nearly 50 cm (20 in). [3] Giant isopods lack an obvious carapace (shell), which is reduced to a "cephalic shield" covering only the head