Killer whales are aquatic mammals, they breathe through a single blow hole, which can be found on top of their heads. Like all mammals they have lungs, unlike fish which use gills to extract dissolved oxygen from water.
Killer whales are mammals and have two internal lungs. They are not fish, and therefore have no gills.
Killer whales - Orcas - yes. Salmon - no. Salmon is a fish, fish use gills.
All whales are mammals and need to breath air from the surface.
Whales are mammals !
All whales have lungs. No whale has gills. The whale Shark has gills, but that name comes from it being a Shark - a fish - the size of a whale.
Whales breathe with lungs, and fish use gills.
Whales
Dolphins and whales are mammals so they don't have gills.
No. Just lungs.
Whales have lungs, as they are mammals, and fish use gills to breath.
Whales have lungs. They descended from land animals with lungs. They had lungs before they became creatures living full time in the ocean. They did not develop either gills or lungs after they became sea creatures but long before.
yes