How many hearts does an octopus have?
An octopus has three hearts: two pump blood through the gills and one pumps it to the rest of the body.
Reference: US Fish and Wildlife Service
An octopus has three hearts: two pump blood through the gills and one pumps it to the rest of the body.
The manatee's closest living relatives are elephants.
An adult elephant can eat a few hundred pounds of plants and drink up to around 50 gallons of water in a single day.