Bigfin reef squid (Sepioteuthis lessoniana) tending eggs which have been laid along a buoy line, taken at dusk, Lembeh Strait, Indonesia, Southeast Asia, Asia

Bigfin reef squid (Sepioteuthis lessoniana), tending eggs which have been laid along a buoy line, taken at dusk, Lembeh Strait, Indonesia, Southeast Asia, Asia

Bigfin reef squid (Sepioteuthis lessoniana), tending eggs which have been laid along a buoy line, taken at dusk, Lembeh Strait, Indonesia, Southeast Asia, Asia

Fluorescent Mushroom Coral, Fungia fungites, Florida Islands, Solomon Islands

Fluorescent Hard Coral, Ambon, Moluccas, Indonesia

Fluorescent Coral, Lobophyllia sp., Florida Islands, Solomon Islands

Detail of coral polyps growing on a healthy reef in Raja Ampat, Indonesia.

By-the-wind sailor (Velella velella), floating on the surface of the sea outside Newport Beach, California, United States of America, North America

By-the-wind sailors (Velella velella), floating by the hundreds on the surface of the sea outside Newport Beach, California, United States of America, North America

Detail of a stony coral (Galaxea sp.) growing in Wakatobi National Park, Indonesia. This remote region is known for its incredible marine biodiversity and gorgeous reefs.

Morpho Achilles butterfly, Mindo, Ecuador, South America

Coral polyps (Galaxea sp.) wait for plankton on a reef in Komodo National Park, Indonesia. This beautiful area harbors extraordinary marine biodiversity and is a popular destination for divers and snorkelers.

Killer whale pod (Orcinus orca), off Punta Colorada, Isla San Jose, Baja California Sur, Mexico, North America

Deep-sea Jellyfish

Dumbo Octopus

Bioluminescent Click Beetle

Coral Fluorescence of Brain Coral in Day Light, Micronesia, Palau

Coral Fluorescence of Brain Coral in Day Light, Micronesia, Palau

(Mnemiopsis leidyi), the warty comb jelly or sea walnut. Only in springtime, when the hard winter slowly subsides, are the ice-cold waters suitable for divers who can dive around a iceberg that floats in crystal-clear water, Tasiilaq, East Greenland

Detail of a cauliflower jellyfish, Boueni Pass, Mayotte

Fast Fluorescent Mantis shrimp. Mayotte

Fluorescent Tube Anemone (Cerianthidae sp) hunting at night on the sand of the S pass. Mayotte

Helmet jellyfish (Periphylla periphylla) is a luminescent, red-colored jellyfish of the deep sea. Trondheimsfjord, Norway, Atlantic Ocean

Fluorescent coral mushroom. Fluorescent coral (Fungiidae sp) attracting its prey in the dark of night, Mayotte

Moray (Gymnothorax sp) fluorescing under blue light, in the reef at night, Mayotte

Fluorescent Sea anemones and Corals at night in the reef, Mayotte

A multitude of fireflies in front of Torrechiara Castle, Parma, Italy

Small fluorescent sea anemones at night on the bottom of the S pass, Mayotte

A multitude of fireflies in front of Torrechiara Castle, Parma, Italy

Fireflies in front of Torrechiara Castle, Parma, Italy

Small fluorescent sea anemone at night on the bottom of the S pass, Mayotte