Beautiful but bizarre
Because lakes are landlocked bodies of water, they are our planet's experimental mixing pots. They can stew strange chemistry and give rise to anomalous creatures found nowhere else on Earth.
Some lakes are the site of catastrophic historical events like meteor strikes or volcanic eruptions, while others harbor ancient secrets or unique geology. Others, like the Plitvice Lakes (pictured), are just plain cool.
Here's our list of 13 of the most bizarre lakes in the world.