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Coral reefs are found in shallow, warm water and support a high diversity of marine life.

Sea turtles are reptiles that spend most of their lives in the ocean; females return to land to lay eggs on the beach where they were born.

The Arctic Marine Ecosystem is characterized by its cold waters, sea ice, and unique species adapted to the extreme conditions.

The Crown-of-Thorns Starfish is a large starfish that preys on coral polyps and can have a devastating effect on coral reefs.

Marine iguanas are reptiles adapted to life in the sea, found only on the Galápagos Islands.

Symbiotic relationships in the ocean, such as between clownfish and anemones, are critical for the survival of many species.

Salt marshes are coastal wetlands that are flooded and drained by salt water brought in by the tides.

Narwhals are Arctic whales known for their distinctive long, spiral tusk which is actually an elongated tooth.

Viperfish are deep-sea fish known for their large mouths, fang-like teeth, and ability to lure prey with bioluminescent photophores.

Lionfish are an invasive species in the Atlantic with a voracious appetite, known for their distinctive appearance and venomous spines.

Cuttlefish are cephalopods known for their ability to change color and texture for communication and camouflage.

The Great White Shark is a large predator found in coastal surface waters in all major oceans.

Many whale species migrate annually, traveling long distances between feeding and breeding grounds.

Marine snow is a continuous shower of mostly organic detritus falling from the upper layers of the water column to the deep sea.

The Pelagic Zone is the open ocean area away from the coast and the ocean floor, inhabited by a wide variety of marine life.

Tube worms are marine invertebrates that live in protective tubular structures, often around hydrothermal vents.

Hammerhead sharks are known for their distinctive head structure, which enhances sensory capabilities.

Coral bleaching is a stress response in corals, typically caused by increased water temperature, leading to expulsion of symbiotic algae and loss of color.

Box jellyfish are highly venomous marine creatures with a cube-shaped body, known for their painful and potentially fatal stings.

The Midnight Zone refers to a layer of the ocean where sunlight does not reach and only specially adapted creatures can live.

Oyster reefs are formed by the aggregation of oysters, which create complex structures and provide important ecosystem services.

Sea urchins are small, spiny creatures found on the ocean floor, often in rocky, shallow waters, and play a role in the ecosystem by grazing on algae.

Mantis shrimp are known for their exceptional vision and powerful claws, used for hunting and defense.

Mangrove forests are coastal wetlands found in tropical and subtropical regions, crucial for coastal protection.

The Sargasso Sea is a region in the North Atlantic Ocean distinguished by a high concentration of floating Sargassum seaweed.

Hydrothermal vents are found on the ocean floor, releasing hot, mineral-rich water that supports unique ecosystems.

Remoras, also known as suckerfish, are known for forming commensal relationships with larger marine animals like sharks.

Deep-sea hydrozoans are a group of jellyfish-like animals adapted to life in the dark depths of the ocean.

Parrotfish are a group of marine species that play a significant role in the health of coral reefs by eating algae that can choke coral.

Moray eels are a family of eels known for their sharp teeth and secretive nature, living in rock crevices and reefs.

Krill are small crustaceans found in all the world's oceans, serving as an important food source for many marine species.

The Colossal Squid is one of the largest known squids, living in the deep Antarctic waters.

Bioluminescent organisms emit light through chemical reactions and are widespread in marine environments.

The Hadal Zone is the deepest part of the ocean, found in oceanic trenches, and inhabited by organisms adapted to extreme pressure.

Giant kelp forests provide a dense habitat for marine life and are found in cold, nutrient-rich waters.

Chemosynthetic communities are found around hydrothermal vents and cold seeps, relying on chemical energy for survival.

Kelp are large brown algae seaweeds that form underwater forests offering protection and nutrients for marine life.

Zooplankton are small and often microscopic animals that drift in marine or freshwater environments, serving as a crucial part of the food web.

Sea grass beds are important marine habitats that serve as nurseries for many species and help stabilize sediments.