![Scientists discovered a surprisingly rich and densely populated ecosystem on the peaks of extinct underwater volcanoes in the Arctic deep sea.](https://abc17news.b-cdn.net/abc17news.com/2022/02/hypatia-h_a2e6fc2457a013f84e85112992d84d40-h_777f977536a545319192bf265652f453-300-375x225.jpg)
Sprawling sponge gardens found deep beneath the Arctic sea ice
By Ashley Strickland, CNN Deep beneath the ice covering the central Arctic Ocean, an unlikely community thrives off of ancient relics. Underwater cameras revealed expansive sponge gardens clustered over extinct underwater volcanoes, called seamounts, along the ocean floor. In order to survive, these largely 300-year-old sponge communities feed off of the fossilized remains of now-extinct
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