SEATTLE, Aug. 16 (UPI) — Coral reefs offer many fish species camouflage and a variety of nooks and crannies in which to hide. In return, fish offer their urine. Read More Coral reefs need fish urine to thrive
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SEATTLE, Aug. 16 (UPI) — Coral reefs offer many fish species camouflage and a variety of nooks and crannies in which to hide. In return, fish offer their urine. Read More Coral reefs need fish urine to thrive