130 
BULLETIN OF THE BUREAU OF FISHERIES 
CRUSTACEANS 
Adult decapods 
The Gulf of Maine supports a host of decapods — that is, crabs, shrimps, and 
lobsters— the larval stages of which often swarm in the plankton, most often along 
shore, as noted elsewhere (p. 34). The adults of nearly all of them live on the 
bottom, except when some of the shrimps make brief swimming excursions upward 
when disturbed, as, for instance, by the passage of the bottom net or trawl, or when 
