The summer adult's body is white apart from the dark grey back and wings and black head.

The barnacle goose has a black chest, white face and a grey back with bars across it.

Microsciurus species have gray or brown backs, and white bellies.

The sand tiger shark has a grey back and white underside.

The body is mainly white with grey back and upper wings.

Bosch could see three white stripes slashed across its smooth gray back.

Then, a couple of hundred yards away, a long gray back rose wetly above the waves.

The broad gray back of something surely too large to be a mere fish was sinking beneath the surface.

It is uniformly darker or blackish on the head, with a dark gray back.

They have a dark grey back and a light grey stomach.