cystophora cristata(n = noun.animal) bladdernose, hooded seal - medium-sized blackish-grey seal with large inflatable sac on the head; of Arctic and northern Atlantic waters;
is a kind of earless seal, hair seal, true seal
is a member of cystophora, genus cystophora

cariama cristata, celosia argentea cristata, celosia cristata, condylura cristata, cyanocitta cristata, cystophora, genus cystophora, iris cristata, proteles cristata, scartella cristata