Unlike other octopus species, the flapjack octopus doesn't have an ink sac and cannot change colour for camouflage.
These swimming sea slugs are fierce predators with an angelic look! Their transparent bodies with flapping wings give them a celestial appearance.
These free-swimming invertebrates, despite their name, are only about 10 cm (four inches) long.
When light hits the tiny cilia of these heart-shaped jellyfish, it refracts, creating a dazzling display.
These intimidating deep-sea creatures use a glowing lure to attract prey, conserving energy by waiting for food to swim by.