Posts Tagged ‘Dungeness crab’

Molting Dungeness crabs

January 22, 2016

Crab molt

The crabs are molting, the crabs are molting! Last week at Prison Rocks, divers noticed a plethora of Dungeness crab (Metacarcinus magister) carapaces. Pictured above is one that Chris brought back to the College and below is a photo that Malou took underwater of a live crab.Crab underwater

Weir’s Beach 16 September 2014

September 26, 2014

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Tuesday morning, 11 am, F block first year Marine Science students explored Weir’s Beach.  Not many photos to mark the occasion, but two great ones thanks to Adva.

Below is the moult of a first instar juvenile Dungeness crab, Metacarcinus magister.

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The megalopae are here!

May 31, 2013

While the students deserted us on 24 May, the Pearson College dock has thousands (maybe hundreds of thousands?) of visitors right now. The final larval stage of the Dungeness crab (Metacarcinus magister) is called a megalopa and there a many, many megalopae swarming around the dock.

Megalopa

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On the dock, there are also thousands of juvenile crabs scrambling around.  The megalopae molt and metamorphose into the benthic juvenile stage seen below.

Juvenile

Megalopa & Juvenile

Megalopae & Juveniles

There are also many megalopae and juveniles on the succession substrates that students put in the water in September 2012.

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P1010707 And Ivan thought nothing was using his wire!

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