Some tips on shooting underwater scenes in the marine habitats at SeaWorld, Disney

First Lady Michelle Obama keeps her eye on the ball while playing tennis during a visit to the ESPN Wide World of Sports Complex at Walt Disney World near Orlando, Florida, Saturday, February 11, 2012. Obama played various sports with students to promote her Let’s Move! health initiative. (Joe Burbank, Orlando Sentinel)

First Lady Michelle Obama keeps her eye on the ball while playing tennis during a visit to the ESPN Wide World of Sports Complex at Walt Disney World near Orlando, Florida, Saturday, February 11, 2012. Obama played various sports with students to promote her Let’s Move! health initiative. (Joe Burbank, Orlando Sentinel)

A guest photographs Cinderella Castle at Walt Disney World’s Magic Kingdom on Thursday, September 29, 2011. The resort turns 40 this weekend, and in many respects, the place looks a lot like it did at 30. It hasn’t built a new theme park in 13 years; it hasn’t added a water park in 16 years; and it hasn’t opened a company-owned hotel in eight years, though a new one is under construction. (PHOTO BY JOE BURBANK, ORLANDO SENTINEL)

A guest photographs Cinderella Castle at Walt Disney World’s Magic Kingdom on Thursday, September 29, 2011. The resort turns 40 this weekend, and in many respects, the place looks a lot like it did at 30. It hasn’t built a new theme park in 13 years; it hasn’t added a water park in 16 years; and it hasn’t opened a company-owned hotel in eight years, though a new one is under construction. (PHOTO BY JOE BURBANK, ORLANDO SENTINEL)