Placencia, Belize: Inner Reef Snorkeling Adventure in Belize. Enjoy an unforgettable snorkeling adventure in Belize as we whisk you away to the Inner Reef. Clear, calm waters and an abundance of fascinating coral and fish make Placencia one of the premier snorkeling spots in the country. Spend half a day exploring exotic coral species, and keep an eye out for dazzling stoplight parrotfish, queen angelfish, squirrelfish, and the great barracuda.