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Here we visit daytime hunters and night feeders, all life looking to feed, reproduce and engage—from dolphins to manta rays. We also explore life among hot vents and deep sea mounts.
Make sure to check out the full Planet Earth lineup.
Learn more about the climates and ecosystems from around the world in our
Guide to Planet Earth.
Don't miss this episode of Planet Earth. Check our tv schedule for local listings.
More on oceans:
Reel Impact: A Sea Change (Movie Trailer)
The Ocean Has Issues: 7 Biggest Problems Facing Our Seas, and How to Fix Them
The Oceans Need Your Help: Take Action
