Quote:
Originally Posted by MAKAI
I read that a menhaden can filter the phytoplankton in up to five gallons of water a minute. This helps prevent algae blooms.
The clearer water means sunlight can penetrate deeper which promotes the growth of oxygen producing plants.
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Living algae, like all plants also produces oxygen during photosynthesis, it only consumes oxygen (again like all plants) when it dies and begins to decompose.