Coral Reef Crossword

3. a secondary tide with a higher frequency (shorter period) than the primary astronomical tide
5. the durable, stone-like material used for driveways and buildings. It is created by mixing cement with water
6. microscopic, harpoon-like stinging organelles found in specialized cells called cnidocytes
9. the science and study of underwater depths in oceans, lakes, or rivers
10. a finely ground powder that acts as a chemical binder
11. any of a large genus of perennial herbs of the buttercup family having lobed or divided leaves and showy flowers without petals
13. marine invertebrate animals in the class Anthozoa that build hard skeletons, or the colorful, rock-like deposits these colonies form
14. is the dynamic area of the coastline that lies between the highest high tide and the lowest low tide

1. a shallow, tranquil body of water separated from a larger body of water (typically the ocean) by a natural barrier like a coral reef, sandbar, or barrier island
2. refers to corals or organisms that do not build reefs
4. are microscopic, single-celled algae that live symbiotically inside the tissues of various marine invertebrates
7. a widely used chemical UV filter in sunscreens and cosmetics
8. to organisms, primarily stony corals within the order Scleractinia that build reefs
12. a ring-shaped coral reef, island, or series of islets that encircles a central lagoon