Answer: dolphins

AnswerCrossword Clue
DOLPHINSSwimmers with blowholes
DOLPHINSThey entertain people on cruises.
DOLPHINSIntelligent sea mammals.
DOLPHINSBrainy mammals.
DOLPHINSMiami eleven
DOLPHINSMiami team
DOLPHINSActor Lundgren + Elected officials
DOLPHINSOnly N.F.L. team with a perfect season (1972)
dolphinsDOLPHIN, a marine mammal
dolphinsmarine mammal having a beaklike snout