Known locally as Santu Pretu or Black Sand Beach, because of the dark gray, ancient volcanic sand marking the start of an amazing dive site. The shipwreck of the Catharine lies upside down in about 20 feet of water, surrounded by colonies of garden eels and nicely encrusted brain corals. Following a line from her bow, a 3 minute swim across a sandy flat takes you to the shoulder of the reef, where you pick up the gentle southerly current that glides you across beautiful scenery, littered with life, ending at the beginning of Mushroom Forest.