Billy and Sheena are visiting their uncle on a Caribbean island. It's the perfect place to go exploring underwater. Billy is not alone in the water, though. Something is lurking deep within the coral reefs.
Publisher:[Beverly Hills, Calif.] : 20th Century Fox Home Entertainment ; [S.l.] : Scholastic, c2005.
General Note: Closed-captioned for the hearing impaired.For private home use only.Originally broadcast on television in 1998.Based on the book series by R.L. Stine.Title from container.