A microscopic snowman, a humanoid robot, and more

This ghost-like octopus was just discovered last year off the coast of Hawaii, but already scientists think it might be in danger. These octopods lay their eggs on one particular type of sponge that grows on top of manganese deposits. Manganese is currently a heavily-mined mineral because of its usefulness in producing mobile phones and other tech gadgets. For now, because of a sufficient amount of manganese on Earth's surface, these animals are safe. But scientists don't know for how long.