* MARINE MAMMALS: WHALES, DOLPHINS, etc. *

ORC a marine mammal [n -S] : ORCA
SEI a {rorqual=n} [n -S]
ULU an Eskimo knife [n -S]

AGLU	agloo (an air hole through the ice made by a seal) [n -S]
BLUB to {blubber=v} [v BLUBBED, BLUBBING, BLUBS] : BLUBBER
ORCA {orc=n} [n -S]
PLEW a beaver skin [n -S]
SEAL to close or make secure against access, leakage, or passage [v -ED, -ING, -S] : SEALABLE [adj], RESEAL UNSEAL, SEALER(s)

AGLOO	an air hole through the ice made by a seal [n AGLOOS] : AGLU(s)
MINKE a small whale [n -S]
OTTER a carnivorous mammal [n -S]
SWILE	a seal (a marine mammal) [n -S] : SWILER(s) SWILING(s)
WHALE to engage in the hunting of whales (large marine mammals) [v WHALED, WHALING, WHALES] : WHALER(s), WHALING(s)
YAPOK {yapock=n} [n -S]

BALEEN whalebone [n -S]
BEAVER to work hard [v -ED, -ING, -S] : BEAVERBOARD(s)
DESMAN an aquatic mammal [n -S]
DUGONG an aquatic mammal [n -S]
FLENCH to {flense=v} [v -ED, -ING, -ES]
FLENSE to strip the blubber or skin from [v FLENSED, FLENSING, FLENSES] : FLENSER(s)
MERMAN a legendary marine creature [n MERMEN] : MERMAID
MOUTON sheepskin processed to resemble seal or beaver [n -S]
MUKTUK whale skin used for food [n -S]
NARWAL {narwhal=n} [n -S] : NARWAL NARWHAL NARWHALE
SEALER one that {seals=v} [n -S]
SELKIE a creature in Scottish and Irish folklore that can change from a seal to a human form [n -S] : SILKIE(s)
SILKIE {selkie=n} [n -S]
SWILER	one that hunts seals [n -S]
WALRUS a marine mammal [n -ES]
WHALER a person engaged in whaling [n -S]
YAPOCK an aquatic mammal [n -S] : YAPOK

BOWHEAD an arctic whale [n -S]
BLUBBER to weep noisily [v -ED, -ING, -S] : BLUBBERY, BLUBBERER(s)
COWFISH an aquatic mammal [n -ES]
DOLPHIN a marine mammal [n -S]
FINBACK the {rorqual=n} [n -S]
FLENSER one that {flenses=v} [n -S]
FLIPPER a broad, flat limb adapted for swimming [n -S]
GRAMPUS a marine mammal [n -ES]
LOBTAIL	(of a whale) to slap its tail against the surface of the water [v -ED, -ING, -S] : LOBTAILING(s)
MANATEE an aquatic mammal [n -S] : MANATOID [adj]
MERMAID a legendary marine creature [n -S] : MERMAN
NARWHAL an arctic aquatic mammal [n -S] : NARWAL NARWHAL NARWHALE
PHOCINE pertaining to seals [adj]
PLATYPI <platypus=n> [n]
RORQUAL a large whale [n -S]
SEALERY the occupation of hunting seals [n -ERIES]
SEALING	the hunting of seals [n -S] : SWILING(s)
SWILING	the activity of hunting seals [n -S] : SEALING(s)
WHALING the industry of hunting and processing whales [n -S]

BEDLAMER	a young harp seal (an aquatic mammal) [n -S]
BLUBBERY fat; swollen [adj]
CACHALOT a large whale [n -S]
CETACEAN an aquatic mammal [n -S] : CETACEOUS
CETOLOGY the study of whales [n -GIES] : CETOLOGIST(s)
DUCKBILL a {platypus=n} [n -S]
HUMPBACK a humped back [n -S] : HUMPBACKED
NARWHALE {narwhal=n} [n -S] : NARWAL NARWHAL NARWHALE
PINNIPED a mammal with limbs modified into flippers [n -S]
PLATYPUS an aquatic mammal [n -PUSES or -PI]
PORPOISE an aquatic mammal [n -S] / to swim through the water like a porpoise [v -SED -SES -SING]
SEALABLE <seal=v> [adj] : RESEALABLE
SEALLIKE resembling a seal (an aquatic mammal) [adj]
SEALSKIN the skin of a seal [n -S]
SEECATCH an adult male fur seal [n -CATCHIE]
SIRENIAN any of an order of aquatic mammals [n -S]
VIBRISSA one of the stiff hairs growing about the mouth of certain mammals [n -SAE] : VIBRISSAL
WHALEMAN a {whaler=n} [n WHALEMEN]

BLUBBERER [n -S]
WHALEBACK [n -S]
WHALEBOAT [n -S]
WHALEBONE [n -S]
WHALELIKE [adj]

CETOLOGIST [n -S]
GOLDENSEAL an herb in the buttercup family [n -S]
OTTERHOUND	[n -S]
SPERMACETI [n -S]

DOLPHINFISH (yes, this is a fish, not a mammal...) [n -ES]

* List compiled from OWL3 + OWL2 + Long List by Rebecca Slivka