Water lungs are found in _____?

واٹر پھیپھڑوں _____ میں پائے جاتے ہیں؟

Most of mammals

Most of fishes

Most of invertebrates

None of these

Water lungs, also known as respiratory trees.

They are found in some marine invertebrates, especially sea cucumbers (Holothuroidea).

These structures help in respiration by extracting oxygen from water.