I am so captivated by this thing.
What Is It?
Reminding viewers of an enormous pupil, this fascinating piece of naturalness is known as The Great Blue Hole (hereafter GBH), and is a part of Belize’s Lighthouse Reef on the coast of the Caribbean Sea.
The Lighthouse Reef is an atoll. Atolls are distinct from other reef types, such as barrier and fringing. Most common in the Indian and Pacific oceans, atoll reefs enclose a space in the shape (ish) of a circle or horseshoe.