In decapods such as lobsters, swimmerets, technically called pleopods, are legs primarily used for swimming but also used for brooding the eggs (except in prawns) and catching food
One of a series of flat, fringed, and usually bilobed, appendages, of which several pairs occur on the abdominal somites of many crustaceans
one of the paired abdominal appendages of certain aquatic crustaceans that function primarily for carrying the eggs in females and are usually adapted for swimming