According to researchers, anywhere from 700,000 to one million species dwell in Earth's oceans. These waters are home to creatures of varying shapes, sizes, and colors, from kelp and plankton to great white sharks and killer whales.
However, many rarely seen and lesser-known creatures dwell in the vast and mysterious depths of the ocean. While some are utterly harmless, there are some that everyone should stay away from at all costs. Here are 50 images of underwater creatures that people rarely see.