Goosebumps - Season 4 Episode 8
Deep Trouble (2)

Billy and his sister, Sheena, are visiting their uncle Dr. Deep on a tiny Caribbean island. Its the perfect place to go exploring underwater...and Billys ready for an adventure. Theres only one rule to remember: Stay away from the coral reefs. Still, the reefs are so beautiful. So peaceful. Billy cant resist. But hes not alone in the water. Somethings lurking deep below the surface. Something dark and scaly. Something thats half-human, half-fish...