|55ft||19.36826 , -81.41651|
Big Tunnels is among the best dives on Grand Cayman. A jutting limestone pinnacle starts off the dive with schooling horse eyed jacks cirling its center, leading to the big tunnel. A cavernous swim through with rope sponges and sea whips protruding from the porous walls, you’ll exit at nearly 105 feet so watch your gauge! A large buttress rests near the big tunnel with schooling silversides swimming through the swiss cheese-like structure in summer.