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.
- Home
- Do orcas have predators?
“Orcas are apex predators with no natural predators.”
Reference: NOAA Fisheries
More from this shelf
What is the largest dolphin?
The orca, also called the killer whale, is actually the largest member of the dolphin family, not a true whale in the everyday sense.
Can an octopus's arms think for themselves?
About two-thirds of an octopus's neurons are in its arms, so each arm can sense and react somewhat independently of the brain.