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03-10-2017, 10:51 AM
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#14 |
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Senior Member
Join Date: Mar 2009
Posts: 2,384
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I can't remember a day otw in the last couple of years that I have not either seen, video'd or metered them. Sometimes on the surface, and sometimes on the bottom. And they can be stratified at any depth of the water column. Sometimes they are spread thru the entire water column.
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