When you think of forests, the images that typically come to mind involve a group of terrestrial wooden behemoths shooting upwards into the sky. Forests are not merely confined to dry land, though — they can also occur underwater.
One of the best examples of this are kelp forests, which you can find in abundance throughout the world's oceans. These dense proliferations of nutrient-rich seaweed offer vital marine habitats to a variety of wildlife, and they've been harvested by humans for millennia.
Of course, these kelp ecosystems aren't the only example of a forest that bucks convention. Here are just a few more unusual forests found on Earth.