Shark has only gills
Lungs
None of them does, unless they're not a shark. Sharks are fish, and fish don't have lungs like whales, which are mammals, do.
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.
i think that they have gills as they are a shark
No, they have gills.Sharks do not breathe with lungs, but with gills that absorb the oxygen in the water.
The Greenland shark (Somniosus microcephalus) is a shark that must live in the sea, and breathes through gills. A reptile is able to breath air using lungs and can live in or out of water.
A whale Shark is a Shark, but big as a whale. As a Shark, it has the characteristics of a fish. Breathes with gills etc. Whales are marine mammals. Breathes with lungs, live birth, nurse its Young etc.
Yes, alligators have lungs and breathe air just like you do. They CAN hold their breath for a long time while they are under water, though!
No a shark is not a mammal. It isn't a mammal because it filters water through it's gill slits then oxygen is filtered from the water. To be a mammal an animal has to directly breath oxygen into the lungs.
well, a shark bite is usually created by a shark (when it bites you) and a crocodile bite is usually created by a crocodile.
No, like all sharks and fish they have gills.