Ocean Formation Climate Life in the Ocean INDEX CREDITS LIFE How Do Animals Live in Water? Article for grades 9 through 12 It's nearly impossible to imagine living in the ocean given how much paraphernalia we need to venture beneath its surface. So how do marine organisms cope? Webpage More about this Resource Mangroves: The Ocean’s Most Productive Ecosystem Article for grades 9 through 12 Seawater contains enough salt to kill almost all flowering plants. Yet the ingenious mangrove "wades right into the ocean" and thrives in the niche between the land and the sea. Webpage More about this Resource Image Gallery: Mangroves Article for grades 6 through 12 Mangroves once covered three-quarters of the world's tropical and subtropical shores, rivers, and estuaries. Explore images of these remarkable plants and the ecosystem they support. Webpage More about this Resource Image Gallery: Coral Article for grades 6 through 12 Coral reefs cover only 0.2 percent of the ocean's area, yet they are home to one-third of all known marine fish species and tens of thousands of other species. View images of these thriving communities. Webpage More about this Resource Image Gallery: Giant Tube Worms Article for grades 6 through 12 Take a deep sea tour that profiles hydrothermal vents and the species that not only are able to live without sunlight but actually thrive in these extreme underwater environments. Webpage More about this Resource