National Geographic : 1992 Jul
~:RTICAL 'WORLD LARVAL STAGES ~,: Most animals around_the piling produce planktonic, _' !arvae;-as adults they : .- 'eithe rrattach to,hard - -' surfaces or are free- .swimming. They include fish such as the feather blenny and shellfish.such as mussels and ovsters. - Shellfish larvae undergo a metamorphosis: fts adults they look completely , different. .\~ cockroach- like crustaceans usually go no farther.than the water's edge to ,wet their gills but willdive,in'if -L'~~ danger threatens..- J' " Wharfc~b-~'(2)~!!0 keep to the.sQray-above, the hi9Mid8J1ne, enter- - ing til'e'waterwhen it is ~me to:release their eggs.