A still from The Changing Sea, part of the 19th Annual Environmental Film Festival in the Nation's Capital.
Blue on the Big Screen
Islanders made homeless by sea-level rise, a dreaming dolphin, and deep underwater explorations are all subjects featured in the 19th Annual Environmental Film Festival. The National Museum of Natural History is proud to host a few of this year’s selections. The festival runs from March 15 to March 27, 2011.

Red Anemone Clings
Credit: © CBC
A Gathering of Seabirds and Seals
Credit: © CBCA menageries of seabirds (including cormorants and pelicans) and seal gather on a rocky outcrop. The photo is a still from The Changing Sea, part of the 19th Annual Environmental Film Festival, which was held in Washington, DC in 2011. See more pictures from the festival's movies.

Offshore Rock Island
Credit: © CBCA still from The Changing Sea, part of the 19th Annual Environmental Film Festival in the Nation's Capital.

Seaside Fishing Town
Credit: © CBCA still from The Changing Sea, part of the 19th Annual Environmental Film Festival in the Nation's Capital.

Fish on Ice
Credit: © CBCA still from Mysteries of the Deep, part of the 19th Annual Environmental Film Festival in the Nation's Capital.

Scientist and his Wet Specimens
Credit: © CBCA still from the film, Mysteries of the Deep, part of the 19th Annual Environmental Film Festival in the Nation's Capital.

Smiling Gulf Coast Man
Credit: © NRDCA still from Stories From the Gulf: Living with the BP Oil Disaster, part of the 19th Annual Environmental Film Festival in the Nation's Capital.

Down the Mississippi
Credit: © University of MinnesotaA still from Troubled Waters: A Mississippi River Story, part of the 19th Annual Environmental Film Festival in the Nation's Capital.

Whale on Camera
Credit: © Dominique LemarieA still from Where the Whales Sing, part of the 19th Annual Environmental Film Festival in the Nation's Capital.

Carbon Dioxide Up
Credit: © Deep Green FilmsA still from The Krill is Gone, part of the 19th Annual Environmental Film Festival in the Nation's Capital.

Oil Rigs off the Louisiana Coast
Credit: © Jon BowermasterA still from SOLA: Louisiana Water Stories, part of the 19th Annual Environmental Film Festival in the Nation's Capital.

The Plastiki Sailboat
Credit: © National GeographicA still from, Voyage of the Plastiki, part of the 19th Annual Environmental Film Festival in the Nation's Capital.

Chesapeake Boat Painting
Credit: © Seltzer ProductionsA still from The Last Boat Out, part of the 19th Annual Environmental Film Festival in the Nation's Capital.

Albatross Soars
Credit: © Splashroom MediaA still from Albatrocity, part of the 19th Annual Environmental Film Festival in the Nation's Capital.

Carteret Islands Row
Credit: © Big Red Barn Films 2010A still from Sun Come Up, part of the 19th Annual Environmental Film Festival in the Nation's Capital.

The Coral Gardener
Credit: © BBCWhen coral reefs are damaged, they sometimes struggle to grow back because there aren't enough coral seedlings around, and the ones that are around are growing together too closely.
Enter: the coral gardeners. Fiji's coral gardeners, who are fishermen trained by biologists, collect small corals that are struggling to grow because they have little space, and bring them to a raised platform that gets good sunlight, nutrients, food and is a good temperature—kind of like a coral greenhouse.
After two years, the corals have grown quite big (which you can see in this video). Some pieces of the corals are replanted, while some are kept in the greenhouse to grow even more.
This photo is a still from The Coral Gardener, a film presented in the 19th Annual Environmental Film Festival in the Nation's Capital in 2011, about Austin Bowden-Kerby, a man who gardens corals to help rebuild reefs.

Jellyfish Floating
Credit: © Creative CommonsA still from Journey of the Universe, part of the 19th Annual Environmental Film Festival in the Nation's Capital.