This 5-1/2 x 8-1/2" card provides a detailed depiction of the Old Swim Platform dive site in Catalina, Avalon. Each waterproof card is double sided, made of durable PVC plastic and is designed to be taken on the dive. They are also 3 hole punched to fit in standard log books.

Established in 1962, the Avalon Underwater Park was the country's first city designated underwater park. With its rich and abundant sea life, easy access, and typically good visibility, it is a very popular dive sites hosting thousands of divers a year. During the summer months, hundreds of divers can be found diving the site and as a favorite location for check-out dives for Open Water scuba classes. Situated adjacent to the famous Casino, the park is roughly rectangular extending from the west-most side of the Casino round to the end of breakwater with buoys and lines marking the park boundaries. It has many points of interest including: the Jacques Yves Cousteau plaque, the Sujac (wreck), and a sunken swim platform from the 1960s.