Mostly with underwater cameras and divers mixed with CG.

• This particular scene looks to be filmed completely underwater with shark model.Now they would simply film the water surface and add CG shark later...with every year the CG effects grow better and they just make complete scene with CG.
• When you need to film actor in water you shoot the scene in the pool and cover the back or above water depends on camera angle with green screen so that later the CG can make it seem they are deep in the water or on some other location.

Behind the cameras there is full team in diving suits.The scene is shoot in many little pieces depending how long actors can hold the breath before then they dive out or are given the oxygen tank.When the video is cut and other camera angles added it appears as they never left the water.

When actor's head can be hidden you can hire the proffesional "breath" divers to shoot the scene in one constant roll.

Here you can see how they filmed harry potter underwater.

Mostly with underwater cameras and divers mixed with Computer Generated Imagery (CGI).

• This particular scene looks to be filmed completely underwater with a shark model. Nowadays they would simply film the water surface and add a CG shark later. CG effects grow better and they just make complete scene with CG.
• When there is a need to film an actor in water the scene is shot in a swimming pool and cover the background with green screen so the CG can make it seem they are deep in the water or in some other location.

Behind the cameras there is full team in scuba gear. The scene is shot in many little pieces depending how long actors can hold their breaths before they surface or are given an air tank. When the video is cut and other camera angles added it appears as they never left the water.

When an actor's face is not visible, a professional "breath hold" diver is shot in the scene in one continuous roll.

Here you can see how they filmed Harry Potter underwater.

Mostly with underwater cameras and divers mixed with CG.

• This particular scene looks to be filmed completely underwater with shark model.Now they would simply film the water surface and add CG shark later...with every year the CG effects grow better and they just make complete scene with CG.
• When you need to film actor in water you shoot the scene in the pool and cover the back or above water depends on camera angle with green screen so that later the CG can make it seem they are deep in the water or on some other location.

Behind the cameras there is full team in diving suits.The scene is shoot in many little pieces depending how long actors can hold the breath before then they dive out or are given the oxygen tank.When the video is cut and other camera angles added it appears as they never left the water.

When actor's head can be hidden you can hire the proffesional "breath" divers to shoot the scene in one constant roll.

Here you can see how they filmed harry potter underwater.

Mostly with underwater cameras and divers mixed with CG.

• This particular scene looks to be filmed completely underwater with shark model.Now they would simply film the water surface and add CG shark later...with every year the CG effects grow better and they just make complete scene with CG.
• When you need to film actor in water you shoot the scene in the pool and cover the back or above water depends on camera angle with green screen so that later the CG can make it seem they are deep in the water or on some other location.

Behind the cameras there is full team in diving suits.The scene is shoot in many little pieces depending how long actors can hold the breath before then they dive out or are given the oxygen tank.When the video is cut and other camera angles added it appears as they never left the water.

When actor's head can be hidden you can hire the proffesional "breath" divers to shoot the scene in one constant roll.

Here you can see how they filmed harry potter underwater.