Conditioning settlement plates for sea cucumber

Credit: Rayner Pitt (United Kingdom)

This photo shows stacks of plates being conditioned before being put into a larval rearing tank for settlement. At that time either cultured algae were added to the water in the conditioning tank, or unfiltered seawater was allowed to run through it. (This latter method may have contributed to the copepod problems which were encountered, and was generally replaced by painting the plates with a mixture of dry spirulina and tap water, then allowing them to dry).

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