This fabulous wall dive was discovered by and named after Mo, one of the owners of Ocean Frontiers. At first glance it may seem you are lost — where is the wall? Rest assured, it is just a short swim away. The pin sits on a shallow shelf, and a leisurely drop down a coral-covered slope leads to a series of four pinnacles that create a captivating dive. Naturally, the pinnacle nearest the boat is called Mo. Winding your way around these towers is simply exhilarating, and you will have to drag yourself away when the time runs out.

Look under the ledges for Channel Clinging Crabs — often disconcertingly large creatures that cling precariously to overhangs above the colossal drop. Their monstrous appearance hides a shy nature, and they will quickly scuttle away into a crevice if approached. Large schools of Bar Jacks hang in midwater above the drop-off, their silvery scales shimmering in the sunlight — do not be surprised if they follow you all the way up to your safety stop, as these feisty characters love to bite the bubbles.