Cordeca (Wreck) is a deliberately scuttled navy corvette off Porto Santo that now works as a sheltered artificial-reef wreck. The wreck is intact enough to give you swim-through feel without turning into a full penetration dive, and the structure is wrapped in sponges and growing reef life. It is known for clear water, schooling fish, and bigger visitors like barracuda and rays around the wreck. This is a straightforward recreational wreck dive rather than a deep technical one.