Also known as Swimmer Crabs and Sandies according to the guys at Fisho fish stall, these Blue Manna Crabs have a vibrant intense blue colour flowing all the way down their accents, the main body or carapice is is a mix of purple and browns. This description of the crab means these ones are boys. You can also tell their gender on the back of the carapice, where there is a V-shaped flap it is a boy. The girls are blue all over with a U-shaped flap, they also have sweeter meat and come at a more costly price.
