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  1. REEF® Sandals, Shoes, Boots & Apparel | Free Shipping over $65

    Shop surf-inspired men's and women's REEF sandals, shoes & clothing for beach and active lifestyle. Free Shipping over $65. Product quality guaranteed.

  2. Reef Environmental Education Foundation | Conserving Oceans …

    Phone: 305-852-0030 | Fax: 305-852-0301 | email: info@REEF.org Visit the Ocean Exploration Center and REEF Campus at Mile Marker 98.3 on Overseas Highway (98380 Overseas Hwy) | Key Largo, …

  3. Reef - Wikipedia

    A reef is a ridge or shoal of rock, coral, or similar relatively stable material lying beneath the surface of a natural body of water. [1] Many reefs result from natural, abiotic (non-living) processes such as …

  4. Silver Reef Resort Casino - Resort and Casino in Ferndale, WA

    Silver Reef Casino Resort is a premier resort destination in Northwest Washington, features over 200 luxury hotel rooms and suites plus a full-service spa and Loomis Trail Golf. Over 1,100 slot …

  5. Reef - National Geographic Society

    Oct 19, 2023 · A reef is a ridge of material at or near the surface of the ocean. There are natural and artificial reefs.

  6. Coral reef | Description, Geochemistry, Origins, & Threats | Britannica

    Feb 19, 2026 · Coral reef, ridge or hummock formed in shallow ocean areas by algae and the calcareous skeletons of coral polyps and other coelenterates. A coral reef may grow into a …

  7. What is a Coral Reef? - NASA

    Oct 15, 2024 · “A coral reef will always be a reef, but not all reefs are coral reefs.” The largest coral reef in the world is Australia’s Great Barrier Reef, which is over 1,000 miles long and covers around …

  8. Coral reef ecosystems - National Oceanic and Atmospheric …

    Feb 11, 2026 · Coral polyps, the animals primarily responsible for building reefs, can take many forms: large reef building colonies, graceful flowing fans, and even small, solitary organisms.

  9. Reef Check Foundation | Supporting the World's Reefs

    Reef Check Foundation is on a mission to save our reefs and oceans. Learn about our initiatives, from our diver programs to youth education and more.

  10. Nano-Reef Community - Keep a small saltwater reef tank of your own!

    Join the Nano-Reef Community, a forum of saltwater reef aquarium hobbyists sharing experiences building small nano reef tanks. Find an extensive library of knowledge in our articles and forum …