4
dolphin(noun, whale, porpoise)
3
living thing(animal, creature, class, being)
2
whale
1
animal kingdom(animal, creature, class, being)
1
animate being(animal, creature, class, being)
1
animate object(animal, creature, class, being)
1
aquatic animal(animal, creature, being, organism)
1
aquatic being(animal, creature, being, organism)
1
aquatic creature(animal, creature, being, organism)
1
aquatic entity(animal, creature, being, organism)
1
aquatic organism(animal, creature, being, organism)
1
class of animal(animal, creature, class, being)
1
eutherian mammal(animal, creature, class, being)
1
female mammal(animal, creature, class, being)
1
fossorial mammal(animal, creature, class, being)
1
living being(animal, creature, class, being)
1
mammal(noun, animal, creature, class, being)
1
mortal being(animal, creature, class, being)
1
order cetacea(animal, creature, being, organism)
1
otter
<12>
11 years ago|297 views|share |citing 
APASmart Define. (2015). aquatic mammal thesaurus. Retrieved September 27, 2026, from https://smartdefine.org/aquatic_mammal/thesaurus/synonyms
ChicagoSmart Define. 2015. "aquatic mammal thesaurus" https://smartdefine.org/aquatic_mammal/thesaurus/synonyms (accessed September 27, 2026).
HarvardSmart Define 2015, aquatic mammal thesaurus, Smart Define, viewed 27 September, 2026, <https://smartdefine.org/aquatic_mammal/thesaurus/synonyms>.
MLASmart Define. "aquatic mammal thesaurus" 10 April 2015. Web. 27 September 2026. <https://smartdefine.org/aquatic_mammal/thesaurus/synonyms>