Third-person singular simple present indicative form of reef.(verb)
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Use "reefs" in a sentence
"Reefs are dying and people's ability to sustainably use coral reefs is being seriously compromised."
"Oct. 16: "Hyperbolic Crochet Coral Reef" A recent discovery of geometry in coral reefs is looked at through crochet to honor an ecosystem harmed by pollution and climate change."
"One of the most damaging things for reefs is when a hurricane covers them with sand, they can't live under sand."