Loggerhead Key – located almost 70 miles west of Key West, Florida – is the largest island of Dry Tortugas National Park. Covering about 49 acres, it is home to a 160-year-old lighthouse and some truly excellent sites for snorkeling and diving. Along with amazing coral formations, divers can find a variety of colorful reef fish, including parrotfish, angel fish, triggerfish and damselfish. Just remember, look but don’t touch. Not only will an accidental brush up against the coral probably kill it, you may be bumping into any number of potentially dangerous animals, include fire coral, jellyfish, sea urchins or the exotic venomous lionfish. Photo by Bryan Goff (http://ift.tt/18oFfjl).