Blue whale (Balaenoptera musculus). The silhouette of a blue whale tail in bright afternoon light. Gulf of California.

Blue whale (Balaenoptera musculus). The typically mottled skin colouring of a blue whale and an equally typical dorsal fin. Gulf of California.

Blue whale (Balaenoptera musculus). A typically view of a very relaxed blue whale tail as it begins a shallow dive. Gulf of California.

Blue whale (Balaenoptera musculus). A blue whale showing the typical mottled skin colouring. Gulf of California.

A Brydes whale (Balaenoptear edeni) with blow. Gulf of California. (rr)

Close up of a blue whales massive blow (Balaenoptera musculus). H

Blue whale (Balaenoptera musculus). Tourists watch the sedate progress of a blue whale as it circles their boat, the animal is feeding. Gulf of California.

Blue whale (Balaenoptera musculus). The tail of a blue whale beneath rugged cliffs. Gulf of California.

A curious Brydes whale (Balaenoptera edeni) swims alongside a boat. Gulf of California.

Blue whale (balaenoptera musculus). A blue whale tail. Gulf of California.

Blue whale (balaenoptera musculus). A blue whale tail and tail stock. Gulf of California.

Blue whale (balaenoptera musculus). A blue whale tail in the afternoon light. Gulf of California.

The blow of a blue whale (Balaenoptera musculus). Gulf of California. (rr)