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Millions of Golden jellyfish, Mastigias papua etpisonii, swim in Palau's famous Jellyfish Lake. The jellyfish population grows with cooler water temperature and falls with warmer temperatures.
Mnemiopsis leidyi, the warty comb jelly or sea walnut is a species of tentaculate ctenophore or comb jelly. It is native to western Atlantic coastal waters, but has become established as an invasive species in European and western Asian regions. ciliated combs. Florida.
Marine polychaete worm Nereis. Black Sea
Jelly fish wash up on the beach of Padre Island, Texas
Underwater
Cute and dangerous jellyfish swimming in the ocean.
Moon Jelly at Alaska Sea Life Center in Seward, Alaska
Lion's mane jellyfish in the dark waters of Alaska with small fish living symbiotically
A beautiful shot of a chrysaora fuscescens swimming in the calm blue water of the National Aquarium in Baltimore, Maryland, United States
A jellyfish glows from within creating a surreal scene. The soft glow hides the danger associated with these sea creatures.
This upside-down jellyfish (Cassiopeia andromeda: 4 cms.) was pulsating gently in the water column. It rests with its bell next to the substrate (hence its common name) and its true beauty becomes apparent only when it swims. It has a symbiotic relationship with algae and tiny shrimps, which live in its tentacles. The species was classified in the early 1760s by Peter Forsskal, a student of Linnaeus, during a visit to Egypt. He was so impressed that he named it after two constellations.
Anthopleura xanthogrammica, or the giant green anemone, is a species of intertidal sea anemone of the family Actiniidae. Other  names for this anemone include green surf anemone, giant green sea anemone, green anemone, giant tidepool anemone, anemone, and rough anemone.  Salt Point State Park, California.
Microscopic image of daphnia, dark field technique
Shell series: sea shells in various colors
Dead jellyfish on the sand of a northern shore.
Closeup of a Pelagia noctiluca in the waters of Sicily
Mediterranean jelly or fried egg jellyfish or Mediterranean jellyfish (Cotylorhiza tuberculata), isolated on white background. Easy photoshop with the original underwater photo.
Top view of a Mediterranean jellyfish (Cotylorhiza tuberculata) floating in the see water of Savudria port in Istria, Croatia
Backgrounds of Bacteria and Mold under the microscope in Lab.
Lion's Mane Jellyfish, Cyanea capillata,  Prince William Sound, Alaska, Scyphozoa, Semaeostomeae, Cyaneidae, large orange brown jellyfish, many tentacles.
Scyphozoa Jellyfish or True Jellies on a beach of Northern Adriatic Sea
Nereid (segmented worm) from San Fancisco Bay, California, USA. Photographed through a microscope. Wet mount (internal organs visible), 50X, transmitted light.
Jellyfish on the seashore. Close-up.
Caterpillar crawling on spiral vine - animal behavior.
White sandy beach with footprints and foreign objects washed up on the beach by the sea.
Whitemargin Moray Gymnothorax albimarginatus occurs in the tropical Indo-Pacific Ocean from Indonesia to the Hawaiian Islands, north to Japan and Taiwan in a depth range from 6-180m, max. length 89cm for males, 106cm for females. The species inhabits coastal reef sand slopes and is secretive during the day. \nThe benthic Whitemargin Moray moves out over sand at night to hunt like this specimen. This species apparently has a venomous bite. \nTriton Bay, Indonesia, 3°54'2.358 S 134°6'18.81 E at 9m depth by night.
A portuguese man o´war (Physalia physalis) - known in Brazil as \
Aurelia aurita (also called the common jellyfish, moon jellyfish, moon jelly or saucer jelly) is a species of the family Ulmaridae.  Monterey Bay, California. Underwater.
Daphnia
The ocean jellyfish aground at pepple beach on Greek island. The animal searches for fish prey and uses its poisonous tentacles to subdue the animals it hunts. Top view, natural light.
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