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Two stranded adult male strap-toothed beaked whales were recorded as only being able to open their mouths 3.2 cm and 4 cm wide, compared to females and juveniles that had a gape size of 6.5 cm. [7] It is thought male beaked whales use their teeth to compete for mating access to females, as evidenced by scars and scratches on the bodies of males ...
Beaked whale species are often sexually dimorphic – one or the other sex is significantly larger. The adult males often possess a large bulging forehead, [7] some to an extreme feature. [8] However, aside from dentition and size, very few morphological differences exist between male and female beaked whales. [9]
They may be numerous, with some dolphins bearing over 100 teeth in their jaws. At the other extreme are the narwhals with their single long tusks and the almost toothless beaked whales with tusk-like teeth only in males. [20] In most beaked whales the teeth are seen to erupt in the lower jaw, and primarily occurs at the males sexual maturity. [21]
Sowerby's beaked whale (Mesoplodon bidens), also known as the North Atlantic or North Sea beaked whale, is a species of toothed whale. It was the first mesoplodont whale to be described. James Sowerby , an English naturalist and artist , first described the species in 1804 from a skull obtained from a male that had stranded in the Moray Firth ...
The five-meter-long creature, a type of beaked whale, was identified after it washed ashore on an Otago beach from its color patterns and the shape of its skull, beak and teeth.
Since the 1800s, only six other spade-toothed whales have been documented. On July 4, a spade-toothed whale washed up near Taiari Mouth in New Zealand and is the first whole animal recovered in ...
Ginkgo-toothed beaked whales are more robust than most mesoplodonts, but otherwise look fairly typical. Halfway through the jaw, there is a sharp curve up where the ginkgo leaf-shaped tooth is. Unlike other species such as Blainville's beaked whale and Andrews' beaked whale , the teeth do not arch over the rostrum.
A whale that washed up near a coastal resort has been formally identified as a Sowerby's beaked whale, which is rarely seen at sea. The body of the juvenile male was found on Saturday near ...
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