kottke.org posts about dolphins

The CoveAug 21 2009

The Cove has been getting great reviews: four stars from Ebert (who calls it "a certain Oscar nominee") and a score of 82 on Metacritic. A quick synopsis from Wikipedia followed by the trailer:

The Cove is a 2009 documentary film documenting the annual killing of more than 2,500 dolphins in a cove at Taiji, Wakayama in Japan. The film was directed by former National Geographic photographer Louis Psihoyos, and was filmed secretly during 2007 using underwater microphones and high-definition cameras disguised as rocks.

Dolphins, the chefs of the seaJan 30 2009

My grandpappy used to say to me, "Them dolphins is smart. The chefs of the sea they are!"** Scientists have observed bottlenose dolphins preparing cuttlefish for consumption.

Considering they can't wield a knife or cleaver, dolphins make impressive butchers. Researchers in Australia recently observed a bottlenose performing a precise series of manoeuvres to kill, gut and bone a cuttlefish. The six-step procedure gets rid of the invertebrate's unappetising ink and hard-to-swallow cuttlebone.

** This is not true.

Dolphins and tuna can swim so fastMar 31 2008

Dolphins and tuna can swim so fast that the water around their tails cavitates.

When the bubbles [formed by cavitation] collapse, they produce a shockwave, which eats away the metal in propellers. To dolphins, it is painful. According to the researchers' calculations, within the top few metres of the water column, this happens when the dolphins reach 10 to 15 metres per second (36 to 54 kilometres per hour).

Tuna don't have this pain problem; their tails don't have nerve endings.

Tags related to dolphins:
science food

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