Oxford Dictionary
softshell
softshell |ˈsɒftʃɛl |(also softshell turtle ) ▶noun a freshwater turtle with a flattened leathery shell, native to Asia, Africa, and North America. ●Family Trionychidae: several genera and many species, including the spiny softshell (Apalone (or Trionyx ) spinifera ) of North America.
softshell clam
soft |shell clam ▶noun a marine bivalve mollusc with a thin shell and a long siphon, valued as food on the east coast of North America. Also called soft clam, steamer clam. ●Genus Mya, family Myidae, especially M. arenaria.
softshell crab
soft |shell crab ▶noun chiefly N. Amer. a crab, especially a blue crab, that has recently moulted and has a new shell that is still soft and edible. Also called soft crab.
Duden Dictionary
Softshell
Soft shell Substantiv, feminin oder Substantiv, maskulin , die oder der |S o ftshell …ʃ …|die Softshell; Genitiv: der Softshell und der Softshell; Genitiv: des Softshell englisch ein atmungsaktives und wasserabstoßendes Gewebe für Jacken, Schuhe u. Ä.