Why do sea animals sink when they die?

They don't to start with. They float for a while until the gases in their bodies escape and then rise to the surface again when the gases from decomposition start to build up in their body cavities and then finally sink back down to the bottom when those gases escape the body. read more

When whales die in the ocean, their bodies eventually sink to the bottom. Once the body comes to rest, biologists refer to this as a whale fall. As you would guess, other fish and sea animals initially eat the meat off the carcass. read more

Right, ducks don't sink. And they will be eaten away by many different living species. Asked to answer by Quora. read more

In the coastal areas of the sea, where highest diversity of sea life resides, it would be rare that a dead fish sits around long enough for it to be decomposed mostly by bacterial action. Even in the open ocean, once the deep sea critters find a dead fish, the time it takes to break it down is actually fairly rapid. read more

All sorts of critters come from many miles away to feed. They stay, make babies, and entire generations live there for a while. 'Sea snow' happens when creatures die at shallower depths, are gradually eaten, and some eventually reaches the sea floor. read more

When whales die in the ocean, their bodies eventually sink to the bottom. Once the body comes to rest, biologists refer to this as a whale fall.As you would guess, other fish and sea animals initially eat the meat off the carcass. read more