Wednesday, July 01, 2009

The Crab With Blue Blood

The NParks staff giving the talk during the Prawn Watch had a Horseshoe crab in a plastic tray along with some prawns and marine snails. These creatures were collected the night before to allow a little show and tell before the prawn harvesting demonstration got underway.The horseshoe crab is a 'living fossil', and the blood of horseshoe crab turns dark blue when exposed to the oxygen in the air when it is cut or stabbed. As the crab is relatively rare, this crab was later released.

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