Can You Identify These Strange Sea Creatures?

The bloody belly comb jelly (Beroe) is a ctenophore that often appears clear but can flash red light when disturbed.

The barreleye fish (Macropinna microstoma) has a see-through dome on its head and eyes that can rotate upward to see prey.

The female anglerfish uses a bioluminescent lure (esca) on a dorsal fin spine to attract prey in the dark depths.

The frilled shark (Chlamydoselachus anguineus) is a primitive species with a long, eel-like body and frilled gill slits.

The crown-of-thorns starfish (Acanthaster planci) can regenerate arms and is covered in venomous spines.

The vampire squid (Vampyroteuthis infernalis) has webbed arms and uses bioluminescence to confuse predators.

The oarfish (Regalecus glesne) can grow over 10 meters long and is thought to be the source of many sea serpent legends.

The lantern shark (Etmopterus) has photophores that produce bioluminescence for camouflage and communication.

The Portuguese man o' war (Physalia physalis) is a siphonophore, not a jellyfish, with a gas-filled float and long tentacles.

The blobfish (Psychrolutes marcidus) has a gelatinous body adapted to high-pressure deep-sea environments.

The sea cucumber (Holothuroidea) can eject sticky threads (Cuvierian tubules) or its own organs to deter predators.

The lion's mane jellyfish (Cyanea capillata) is one of the largest jellyfish, with tentacles that can extend over 30 meters.