Because they are whales and they need to breath.
Whales have a blow hole so they could breath when they sufarce
Yes, black whales do have blow holes. They keep them closed when they are underwater.
They sure do.
Yes, they do.
Orca Whales have blow holes so when they have water or anything they swallowed they can blow it out. Kind Of like a burp. :)
All whales have blow holes to breathe, also to spurt out the water they suck in when eating plankton.
Whales blow holes are similar to our noses. They allow the whale to breath by coming to the surface. Its basically like a nose on top of the whales head, and is evolved from a nose like ours.
Only one. The same as every whale or dolphin.
no they have blow holes used to breathe by going up to the surface.
They both have blow holes and also they breach. they don't get along with each other
Dolphins (and whales, etc) breath through the blow holes on their head.