Humpback Whale Underwater Bubble Streaming Among Rowdy Groups in Hawaii

During the years I worked for Dan Salden and Hawaii Whale Research Foundation studying humpback whales (Megaptera novaeangliae) in Hawaii, we usually looked for surface active groups (“rowdy groups“) when possible, since these groups offered the greatest potential for collecting the social affiliation information that was the focus of Dan’s decades of research on humpback whales. Bubble blasts and bubble streaming were often a part of the rowdy group’s activities, by one or several whales. We would spend time photographing as many fluke IDs as we could, to identify which whales were in the group, as well as noting those animals that would depart or join during the time we were observing them. Eventually, if conditions were right, we would enter the water to observe them below the surface. The goal at this point was to determine the roles that the individual whales had: primary escort, challenging escorts, focal female, peripheral individuals, etc. Often these roles are clear from topside views, but not always, so getting in the water is important. Gradually, over years of observation, we accumulated a lot of interesting, unique video of active groups, including the bubble streaming that would occur in these groups. I had opportunities to shoot still photographs of the bubble streaming too. Below are some of my favorite images of humpback whales from my time in Hawaii. Cheers, and thanks for looking!

Adult male humpback whale bubble streaming underwater.  The male escort humpback whale seen here is emitting a curtain of bubbles as it swims behind a mother and calf.  The bubble curtain may be meant as warning or visual obstruction to other nearby male whales interested in the mother, Megaptera novaeangliae, Maui

Adult male humpback whale bubble streaming underwater near mother and calf. The male escort humpback whale seen here is emitting a curtain of bubbles as it swims behind a mother and calf. The bubble curtain may be meant as warning or visual obstruction to other nearby male whales interested in the mother.
Image ID: 05928
Species: Humpback whale, Megaptera novaeangliae
Location: Maui, Hawaii, USA

Adult male humpback whale bubble streaming underwater.  The male escort humpback whale seen here is emitting a curtain of bubbles as it swims behind a female (left) during a competitive group.  The bubble curtain may be meant as warning or visual obstruction to other male whales interested in the mother, Megaptera novaeangliae, Maui

Adult male humpback whale bubble streaming underwater.
Image ID: 02828
Species: Humpback whale, Megaptera novaeangliae

Primary escort male humpback whale bubble streaming during competitive group socializing.  This primary escort is swimming behind a female. The bubble curtain may be a form of intimidation towards other male escorts that are interested in the female, Megaptera novaeangliae, Maui

Primary escort male humpback whale bubble streaming during competitive group socializing. This primary escort is swimming behind a female.
Image ID: 04432
Species: Humpback whale, Megaptera novaeangliae

Male humpback whale bubble streaming underwater.  The male escort humpback whale seen here is emitting a curtain of bubbles as it swims behind a mother and calf (barely seen in the distance), Megaptera novaeangliae, Maui

Male humpback whale bubble streaming underwater. The male escort humpback whale seen here is emitting a curtain of bubbles as it swims behind a mother and calf (barely seen in the distance).
Image ID: 04434
Species: Humpback whale, Megaptera novaeangliae

Adult male humpback whale bubble streaming underwater.  The male escort humpback whale seen here is emitting a curtain of bubbles as it swims behind a female during competitive group activities.  The bubble curtain may be meant as warning or visual obstruction to other nearby male whales interested in the female, Megaptera novaeangliae, Maui

Adult male humpback whale bubble streaming underwater. The male escort humpback whale seen here is emitting a curtain of bubbles as it swims behind a female during competitive group activities.
Image ID: 04444
Species: Humpback whale, Megaptera novaeangliae

Adult male humpback whale bubble streaming underwater.  The male escort humpback whale seen here is emitting a curtain of bubbles as it swims behind a mother and calf.  The bubble curtain may be meant as warning or visual obstruction to other nearby male whales interested in the mother, Megaptera novaeangliae, Maui

Adult male humpback whale bubble streaming underwater.
Image ID: 05925
Species: Humpback whale, Megaptera novaeangliae

Male North Pacific humpback whale streams a trail of bubbles.  The primary male escort whale (center) creates a curtain of bubbles underwater as it swims behind a female (right), with other challenging males trailing behind in a competitive group.  The bubbles may be a form of intimidation from the primary escort towards the challenging escorts, Megaptera novaeangliae, Maui

Male North Pacific humpback whale streams a trail of bubbles. The primary male escort whale (center) creates a curtain of bubbles underwater as it swims behind a female (right), with other challenging males trailing behind in a competitive group.
Image ID: 05968
Species: Humpback whale, Megaptera novaeangliae

Adult male north Pacific humpback whale bubble streaming underwater in the midst of a competitive group.   The male escort humpback whale seen here is emitting a curtain of bubbles as it swims closely behind a female, .  The bubble curtain may be meant as warning or visual obstruction to other nearby males interested in the female, Megaptera novaeangliae, Maui

Adult male north Pacific humpback whale bubble streaming underwater in the midst of a competitive group. The male escort humpback whale seen here is emitting a curtain of bubbles as it swims closely behind a female.
Image ID: 06001
Species: Humpback whale, Megaptera novaeangliae

Adult male north Pacific humpback whale bubble streaming underwater in the midst of a competitive group.   The male escort humpback whale seen here is emitting a curtain of bubbles as it swims closely behind a female, .  The bubble curtain may be meant as warning or visual obstruction to other nearby males interested in the female, Megaptera novaeangliae, Maui

Adult male north Pacific humpback whale bubble streaming underwater in the midst of a competitive group.
Image ID: 06037
Species: Humpback whale, Megaptera novaeangliae

Adult male humpback whale bubble streaming underwater.  The male escort humpback whale seen here is emitting a curtain of bubbles as it swims behind a female (left) during a competitive group.  The bubble curtain may be meant as warning or visual obstruction to other male whales interested in the mother, Megaptera novaeangliae, Maui

Adult male humpback whale bubble streaming underwater.
Image ID: 02826
Species: Humpback whale, Megaptera novaeangliae

NOTE: These photographs were taken during Hawaii Whale Research Foundation research activities conducted under NOAA/NMFS and State of Hawaii scientific research permits.