Assertion: crab's organ | /r/Synonym | branchiostegal lung
Facets:
Source sentences:
text: They use a special organ called a branchiostegal lung to breathe.
text: Coconut crabs have organs known as branchiostegal lungs, which are used instead of the vestigial gills for breathing, and after the juvenile stage they will drown if immersed in water for too long.
text: They have an organ called a branchiostegal lung, which can be described as a cross between gills and lungs.