About 1 1/2 miles east of Sand Key Light you find Rock
Key and the
Eastern Dry Rocks. Both have a rubble zone and topped with Hard Corals.
Canyons cut though the formations with sandy bottoms waiting to be
explored. Its major attractions other than the lush growth are the wrecks
there. Rock Key has a large area of pebble ballast, tiles from Europe,
spikes, and cannon balls. On the western end of Eastern Dry Rocks you
find another pile of ballast stones spread out over 100 yards. Most of the
dive boats stop at these reefs.