When they have a lot of gas stored up, they’re naturally more buoyant, floating to the surface of the water. The West Indian manatee has pouches in its intestines where it can store farty gasses. Buoyancy is vital for swimming manatees, and they rely on digestive gas to keep them afloat. The Bolson pupfish isn't the only animal that needs healthy farts to maneuver underwater. MANATEES USE FARTS AS A SWIMMING TECHNIQUE. If the fish doesn’t fart, it will likely die, either from predation or because its intestines rupture under the pressure of the trapped gas. Even if it tries to bury itself in sediment at the bottom of a pool, as Bolson pupfish are wont to do, the air causes the fish to rise to the surface, where it’s at risk of being eaten by a bird. The air inflates the fish’s intestines and distends its belly, messing with its equilibrium and making it difficult to swim. The pupfish feeds on algae, and it can inadvertently eat the gas bubbles that algae produces in warm temperatures. The diet of the Bolson pupfish, a freshwater fish found in northern Mexico, can lead to dangerous levels of gas.

The amazing frog that farts