Life Lines by Dr. Dolittle

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Tag Archive for ‘whale’

Fin whales have coiled nerves

Fin whales have big mouths, really big mouths. When your meals consist of tiny krill, it is understandable why you would evolve the ability to stretch your mouth super-wide. With each meal comes a lot of water, which expands a pouch in the bottom of their mouths. As the pouch expands, all of the tissues in the pouch expand as well including blood vessels and nerves.  Stretchy nerves caught the interest of of Dr. […]

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Why orcas go through menopause

Orcas are one of only three species of mammals that go through menopause, including humans of course. A new study published in Current Biology may have discovered why this happens in killer whales. Examination of 43 years worth of data collected by the Center for Whale Research and Fisheries and Oceans Canada, revealed a remarkable finding about the costs of reproduction in orcas. Older mothers tend to spend more time taking care […]

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