The Deep Blue Sea
The ocean is blue because water absorbs colors in the red part of the light spectrum. Like a filter, this leaves behind colors in the blue part of the light spectrum for us to see.
Hardly any light penetrates deeper than 200 meters (656 feet), and no light penetrates deeper than 1,000 meters (3,280 feet). (NOAA)
Get deep into the three-story tall Blue Cavern live cam and catch a glimpse of California fish and manta rays at the Aquarium of the Pacific!