You do not have gills in your bowels.

Not that I'm saying you have gills.

Perhaps the ideal beach body would have gills for survival in the water, like Kevin Costner in Waterworld.

The embryos still have gills.

We dont all have gills.

The Tadpole has gills, has no limbs, uses its tail like a fish's fin, eats plants, etc.

It's like having gills to breathe underwater.

Their legs were too weak, they still had gills, and their limbs ended in decidedly fishy fins rather than fingers.

There is a point, for instance, in the development of the fetus when it has gills, though it never uses them.

It has been a vertebrate and gone back, and now has the signs of a notochord in early life, and it also has gills.

Ben smiled politely, but the smile gave way to shock when he noticed that the River Master had gills at the side of his neck.