Crabs are among the best-known arthropods—a words meaning jointed ft (Greek: arthron, joint; pous, foot)
When progressing property or towards the sea bed, crabs always move around in an excellent sideways trend: the leading base remove the human body give and the ones to the other side assist from the pushing
He or she is among the most successful of all of the life style variety (regarding 4,five-hundred types had been revealed), with users adjusted to help you life towards the belongings along with water; specific varieties actually flourish in surviving in both habitats. The majority, although not, reside in the newest aquatic environment. As opposed to lobsters (to which they are directly related), that have an extended and you will cylindrical human body with a long instinct, crabs keeps a broad, flattened looks and you can a short, symmetrical gut-changes that allow them to fit beneath stones and you may on crevices to own eating aim in addition to concealment.
The majority of the human body try taken up to by abdomen. Connected with this might be a tiny head and that bears a lot of time vision stalks that suit to the special sockets on the carapace. Daha fazlasını oku