Did you know that a blue whale skeleton has been leaking oil for 26 years? The King of the Blue Ocean (KOBO) was discovered in 1998 and underwent extensive cleaning, but some oil remains. At the New Bedford Whaling Museum in Massachusetts, visitors can still smell the oil, which adds to their experience. Don't worry, a system catches the oil and sends it into a flask.

Source: https://www.wionews.com/world/watch-out-this-blue-whale-dead-for-26-years-is-still-reeking-oil-from-its-bones-770689