Hydras respirate via diffusion, oxygen in the comparatively oxygen-rich surrounding water passes through their epidermis to their comparatively oxygen-deficient internals. They do not breathe at all.
they breathe with gills
gills.
Fish use gills to breathe underwater.
Yes, fish do 'breathe' through gills.
Fish breathe with the help with gills.
Gills
The gills and the brain
YES IT CAN BREATHE THROUGH BOTH lungs and gills
No,not all fish breathe through gills
Fish breathe with gills. By the way, whales do not. They breathe air, because they are mammals.
They breathe through gills
They breathe with gills and lungs