Eschrichtius robustus bubble blast 2012 04-15 SB Channel-d-099
Close look at the Blue Whale (Balaenoptera musculus) that blasts bubbles on its deep dive.
Another view of the bubble blast from this Blue Whale (Balaenoptera musculus).
This individual Blue Whale (Balaenoptera musculus) let loose a big blast of air every time it started its deep dive.
Bubble blast from a Humpback Whale (Megaptera novaeangliae) beneath the surface.
Another bubble-blasting California Sea Lion.
Whalers on the Condor Express get a good look at a bubble blast from a submerged Humpback Whale.
A curious image of some real biological interest:  A Humpback Whale (Megaptera novaeangliae) lets out a big blast of air bubbles from its blowhole as it rises up from below this patch of kril (Thysanoessa spinifera).  You can see the krill jumping out of the water.
Humpback Whale (Megaptera novaengliae)  lets loose with a blow while still submerged.  Image 1 of 2.
Eschrichtius robustus bubble blast 2012 04-15 SB Channel-d-099
Eschrichtius robustus bubble blast 2012 04-15 SB Channel-d-099
Eschrichtius robustus bubble blast 2012 04-15 SB Channel-d-099
See photo in original gallery.