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  • Head-on view of an approaching humpback whale (Megaptera novaeangliae), with tubercles on the whale's head clearly visible. Tubercles are bumps (about the size of a golf ball) on humpback whale heads. The tubercles contain a hair follicle, and may be for used for sensory purposes.
    humpback-whale-head-with-tubercles-v...tif
  • Close-up view of the tubercles on a humpback whale's head. Tubercles are knobby projections on humpback whale heads that contain hair follicles, possibly for sensory purposes.
    tubercles-humpback-whale-head-megapt...tif
  • Large male humpback whale (Megaptera novaeangliae) spyhopping in the early morning. The single hairs in the whale’s tubercles are visible, as are hairs on the front of the rostrum that are not contained within a tubercle.
    hairs-on-humpback-whale-rostrum-and-...tif
  • Researcher measuring tubercles on humpback whale calf (Megaptera novaeangliae) that washed ashore on 3 January 2012 in Odawara, Japan. Measured 6.87 meters long and was male. Cause of death unknown. This humpback whale calf is the third smallest one recorded to date that has stranded or washed ashore in Japan. It is the third deceased calf to have been found in the 2011-2012 breeding and calving season. Members of the science community recording measurements for Japan's cetacean stranding database.
    dead-humpback-whale-calf-beached-in-...jpg
  • Adult male humpback whale (Megaptera novaeangliae) breaching at Toku Island. This was an escort that remained with a mother and calf, the 14th calf I ID-ed in the 2011 season in Tonga, for at least 14 days. Note that some of the tubercles on the whale's head are red, likely due to confrontations with other male humpback whales. I witnessed several such confrontations underwater that involved significant body contact.
    humpback-whale-breaching-megaptera-n...tif
  • Adult male humpback whale (Megaptera novaeangliae) breaching at Toku Island. This was an escort that was associated with a mother and calf (Tahafa, calf #14 of the 2011 season in Tonga) for at least 14 days. Note that some of the tubercles on the whale's head are red, likely due to confrontations with other male humpback whales. I witnessed several such confrontations underwater that involved significant body contact.
    breaching-humpback-whale-megaptera-n...tif
  • Researcher measuring tubercles of humpback whale calf (Megaptera novaeangliae) that washed ashore on 3 January 2012 in Odawara, Japan. Measured 6.87 meters long and was male. Cause of death unknown. This humpback whale calf is the third smallest one recorded to date that has stranded or washed ashore in Japan. It is the third deceased calf to have been found in the 2011-2012 breeding and calving season. Members of the science community recording measurements for Japan's cetacean stranding database.
    dead-humpback-whale-calf-beached-in-...jpg
  • Humpback whales are mammals, as demonstrated by this hair follicle protruding from a tubercle on the whale's rostrum. This humpback whale calf (Megaptera novaeangliae) washed ashore on 3 January 2012 in Odawara, Japan. Measured 6.87 meters long and was male. Cause of death unknown. This humpback whale calf is the third smallest one recorded to date that has stranded or washed ashore in Japan. It is the third deceased calf to have been found in the 2011-2012 breeding and calving season.
    dead-humpback-whale-calf-beached-in-...jpg
  • Humpback whales are mammals, as demonstrated by this hair follicle protruding from a tubercle on the whale's rostrum. This humpback whale calf (Megaptera novaeangliae) washed ashore on 3 January 2012 in Odawara, Japan. Measured 6.87 meters long and was male. Cause of death unknown. This humpback whale calf is the third smallest one recorded to date that has stranded or washed ashore in Japan. It is the third deceased calf to have been found in the 2011-2012 breeding and calving season.
    dead-humpback-whale-calf-beached-in-...jpg
  • The rostrum of a humpback whale (Megaptera novaeangliae) emerging from the water. This whale was part of a group of humpback whales engaged in cooperative bubble-net feeding. Viewing this image at 100%, you can see the tubercles (including single follicles of hair protruding from some of them), an injury to one of the tubercles, and a few whale lice (Cyamus boopis) at the tip of the lower jaw. Note also the barnacles under the jaw, which are humpback whale barnacles (Coronula diadema), that grow only on humpback whales. In addition, growing on the humpback whale barnacles are a type of gooseneck barnacle (Conchoderma auritum), that appear only on humpback whale barnacles.
    humpback-whale-rostrum-tubercles-par...tif
  • This is a 4x life-size close-up view of a single tubercle of a Selenka's sea cucumber (Stichopus horrens). The tubercles give this species their characteristic appearance. The sea cucumbers extend (as seen here) and retract the tubercles frequently. The tubercles collapse inward along the concentric rings when retracted. Photographed in Kagoshima Prefecture, Japan.
    stichopus-horrens-sea-cucumber-tuber...tif
  • Humpback whale calf (Megaptera novaeangliae) with an infestation of whale lice (Cyamis boopis), an ectoparasite that lives exclusively on humpback whales. Single hairs protruding from the round tubercules on the whale's head are also visible.
    humpback-whale-calf-whale-lice-infes...tif
  • Adult female humpback whale (Megaptera novaeangliae) at rest while her calf was playing at the ocean surface. Note the small stream of bubbles coming from her blowholes. From this angle, the pattern and array of tubercles on the whale’s head is clearly visible, as are the barnacles (Coronula diadema), whale lice (Cyamus boopis), and hairs on the whale’s jaw.
    humpback-whale-adult-female-resting-...tif
  • Yellow-orange Cadlinella ornatissima nudibranch with characteristic pink-tipped tubercles and white rhinophores
    cadlinella-ornatissima-nudibranch-le...tif
  • Researcher photographing tubercles on head of humpback whale calf (Megaptera novaeangliae) that washed ashore on 3 January 2012 in Odawara, Japan. Measured 6.87 meters long and was male. Cause of death unknown. This humpback whale calf is the third smallest one recorded to date that has stranded or washed ashore in Japan. It is the third deceased calf to have been found in the 2011-2012 breeding and calving season. Members of the science community recording measurements for Japan's cetacean stranding database.
    dead-humpback-whale-calf-beached-in-...jpg
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