The male transfers sperm by inserting his gonopods (sexual organs resembling antennae) into the two genital pores, called gonophores, on the females underside. Some crabs will mate standing up, facing one another, but most species actually prefer the missionary position, with the female beneath the male.
How do crabs have babies?
The female crab stores the sperm until her eggs are fully developed. The eggs are fertilized when the female extrudes them under her abdomen where they are carried until hatching. A large female crab can carry 2.5 million eggs. After hatching, the young crabs are planktonic and swim freely away from the female.
Does a crab mate for life?
A female blue crab can mate for just one short period in her life, during a few days after she molts to maturity. This gives male blue crabs a very short window of time to inject her with the sperm that will fertilize the millions of eggs she will produce in the next year or two.
Why red crab are not edible?
Red crabs arent the kind of crabs you get at a seafood restaurant. Their meat are made up of 96% water and they are just too small and dont have good flavor to be considered edible. The meat is very white and has a distinct red pigment on the outside like a lobster.