What is James Cameron's underwater sci-fi film featuring mysterious deep ocean aliens?

The Abyss

Who was the firstborn son of Abraham? What weapon did Peter use to strike during Jesus’ arrest? What type does the Pokémon Lucario belong to besides Fighting? What tropical fruit has varieties known as 'Ataulfo' and 'Tommy Atkins'? Which ballet is featured prominently in the movie 'The Nutcracker and the Four Realms'?