Undersea Highway is on the southern end of Elbow Reef and is a crew favorite. There are long coral fingers and sand channels that slope down from 20 feet into about 45 feet and turn into two parallel ledges running from the NE to SW.
These two ledges down in the deeper water give this site it's name because they act like a highway and we often just park ourselves in the sand and see what comes by! Eagle Rays, schools of fish, Sharks, and almost everything you can think of often cruise down the highway.
It's a great site for all levels of divers because it offers a shallow area which is great for juvenile fish and for those who wish to to have a little more depth, the channel that is the highway is in the deeper water.