Marlfox has the Riverhead tribe, made up of Irish-accented watervoles who keep a number of small boats and are shown to be good sailors.

In addition to the aforementioned otters there are also many 'Sea Rat' pirates (while rats are not generally found in water they are still excellent swimmers), and the Guosim shrews (who are basically a band of nomadic riverboat sailors) are probably supposed to be Eurasian Water Shrews.

The leaders are typically known as 'skippers', a term usually referring to the captain of a boat or small ship.

The majority of otters are sailors or fishermen.

See Rabbit Magician for an animal with a more fantastical (or fantastic-seeming) occupation or profession. Examples involving crabs (the invertebrates most prone to this trope) are likely to cross over with Penny-Pinching Crab, because of Pirate Booty, of course. Same thing can be said with merfolk, since they aren't real-life animals. Instances where a Pirate Parrot takes the form of a pirate don't count, since parrots aren't actually seabirds. Sub-Trope of Animal Stereotypes and Animal Occupation Stereotypes. This is likely because these kinds of jobs are done at sea, but not underwater most of the time. Even when other animals are present in the crew, the captain is still usually one of these. While squids are fully aquatic, some octopuses have been observed crawling around on land for short periods of time.

The octopus and squid also tend to take up naval careers. Naval careers, such as sailors and pirates, are often taken up almost entirely by semi-aquatic species such as ducks, loons, seabirds, otters, seals note puns about Navy SEALs may or may not result, turtles, frogs, and crabs. But the animals that take up the nautical professions tend to be semi-aquatic.

Beavers are construction workers, moles are miners, kangaroos are boxers, dalmatians are firefighters, pandas are martial artists, etc.

In the World of Funny Animals, different species have professions based on their stereotypes. Krabs, SpongeBob SquarePants, 'Grandpappy the Pirate'