CRITTER: Crustose coralline algae: Lava reef cement

  • Crustose coralline algae

  • Crustose coralline algae

Giant waves have been crashing on the lava coastline in Kauai for millions of years. These waves break down the lava rock over time but we still have nice flat lava reefs we surf over. Why aren’t our reefs all ground up into sand? A million years of crashing waves should have reduced our porous lava reefs into rubble.

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