Just got back from Cayo Coco the other day. Great weather and some nice diving. Primarily they are shallow dives- all but one were between 10 and 18M (60ft), although we did do one deep dive to 37M (120 ft).
Abundance of coral blocks, lots of soft coral and plumes. Encountered morays, nurse shark, groupers, angels, and the usual reef tropicals- including lionfish. On another day divers encountered dolphins but I missed out on that. Nice relaxing dives for the most part although a few of the shallower dives were a bit crowded with 'discover scuba' and weekend PADI splashers. Nothing too dramatic in terms of structure, one small wreck and no walls, but fun diving with plenty of smaller tropicals to see.