| #8822, aired 2023-03-07 | MERMAIDS $600: These aquatic mammals of the order Sirenia are believed to be a source of mermaid legends manatees |
| #7821, aired 2018-09-17 | MAMMALS $2000: Sadly, less than 30 years after it was discovered, Steller's this aquatic mammal was hunted to extinction a sea cow |
| #7775, aired 2018-06-01 | STARTS WITH A MUSICAL INSTRUMENT $400: A spear used on aquatic mammals a harpoon |
| #7400, aired 2016-11-11 | ENTERTAINING ANIMALS $1000: On film a Maine harbormaster & his family have their hands full with "Andre", one of these aquatic mammals a seal |
| #7200, aired 2015-12-25 | THE SIMPSONS EPISODE TITLES $1000: The "Bonfire of" these aquatic mammals manatees |
| #6953, aired 2014-12-03 | COLORFUL BOOK TITLES $1600: A true story inspired Scott O'Dell to write "The Island of" these aquatic mammals the blue dolphins |
| #5743, aired 2009-07-22 | NATURE STUDY $6,000 (Daily Double): It's the only cetacean that habitually feeds on warm-blooded aquatic mammals the killer whale |
| #5638, aired 2009-02-25 | MIRRORS $400: A 2001 experiment found not just primates but these aquatic mammals recognize themselves in mirrors dolphins |
| #5565, aired 2008-11-14 | AQUATIC MAMMALS $400: This largest of the toothed whales is also the most numerous sperm |
| #5565, aired 2008-11-14 | AQUATIC MAMMALS $800: This pinniped uses its tusks to dig mollusks from the ocean floor the walrus |
| #5565, aired 2008-11-14 | AQUATIC MAMMALS $1200: Seen here, the sea type of this has the thickest fur of any animal, with more than one million hairs per square inch the sea otter |
| #5565, aired 2008-11-14 | AQUATIC MAMMALS $1600: Tursiops truncatus, the scientific name of this beaked dolphin, means "dolphin with a cut-off face" a bottlenose dolphin |
| #5565, aired 2008-11-14 | AQUATIC MAMMALS $3,000 (Daily Double): Its population has grown the past few years, but this state marine mammal of Florida is still endangered the manatee |
| #4705, aired 2005-02-04 | AH, FLORIDA $800: 1 of the 2 offical aquatic mammals of Florida a manatee (or dolphin) |
| #4634, aired 2004-10-28 | AQUATIC LIFE $1600: You may spot the spinner species of these mammals in the bays of Hawaii dolphins |
| #3788, aired 2001-02-07 | MAMMALS $100: "Leave it to" this semi-aquatic rodent to cut down a tree over 100 feet tall a beaver |
| #2414, aired 1995-02-16 | MAMMALS $1000: Known as Orcinus orca, it's the largest of the aquatic mammalian family Delphinidae the killer whale |
| #2220, aired 1994-04-08 | MAMMALS $1,000 (Daily Double): They're the most aquatic members of the weasel family otters |
| #1956, aired 1993-02-22 | AQUATIC ANIMALS $500: The 2 major groups of these mammals are toothed & baleen whales |
| #1926, aired 1993-01-11 | MAMMALS $300: This aquatic animal uses a stone as an anvil to open shells as well as to dislodge abalones the sea otter |
| #1602, aired 1991-07-16 | MAMMALS $400: This aquatic weasel comes in both freshwater & "sea" varieties an otter |
| #952, aired 1988-10-25 | AQUATIC LIFE $500 (Daily Double): Though ungainly in appearance, these aquatic mammals may have given rise to the legend of mermaids manatee or sea cow |
| #705, aired 1987-10-02 | MARINE BIOLOGY $400: Term for limbs of aquatic mammals or birds which have become adapted for swimming flippers |
