The Great Barrier Reef is a massive ecosystem built on the critical concept of symbiosis. The reef's foundation relies on the partnership between coral polyps, which are animals, and microscopic algae called zooxanthellae. The algae provide food and vibrant color to the coral in exchange for a protected home. This theme of cooperation is found throughout the reef, including the fascinating relationship between the nearly blind pistol shrimp, which builds a burrow, and the sharp-eyed goby fish, which acts as a lookout.

The reef is home to a "Great Eight" list of must-see animals, including giant clams, manta rays, sea turtles, and whales. It also features unique human touches, like an official Australia Post mailbox floating miles offshore. Geologically, the modern reef structure is surprisingly young, having formed only after the last Ice Age. Protecting this ecosystem is critical, and one way to help is by using reef-safe mineral sunscreens containing zinc oxide or titanium dioxide, while avoiding chemicals like oxybenzone and octinoxate, which are harmful to coral.

Want to learn more? Head over to my website www.funfactsdailypod.com and be sure to listen to my other podcasts Who ARTed: Weekly Art History for All Ages or Art Smart. For family fun, check out my son's podcast Rainbow Puppy Science Lab

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