Your 3-D glasses are the equivalent of a diver’s mask—at least that’s the idea behind this production directed by Howard Hall, who specializes in marine wildlife movies, and narrated by Kate Nelligan. The director of photography is Noel Archambault. Highlights include footage of a baby shark, the mating of opalescent squid, and a spiny lobster shedding its shell—apparently a process rarely witnessed by humans. 35 min.