Corals Of The Pacific Ocean | B-Roll Scenic Footage

Corals Of The Pacific Ocean | B-Roll Scenic Footage.

Select B-Roll footage of some corals of the Pacific Ocean.

Corals and coral reefs are found around the islands and atolls of the Pacific Island region, which consists of the Hawaiian Islands (State of Hawaiʻi), the Marianas Islands (Territory of Guam and Commonwealth of the Northern Mariana Islands), the eastern portion of the Samoan Islands (Territory of American Samoa), and several islands and atolls in the central Pacific collectively referred to as the Pacific Remote Island Area (Wake Island, Johnston Atoll, Palmyra Atoll, Kingman Reef, Jarvis Island, Baker Island, and Howland Island). Biodiversity of marine organisms, including corals, is higher in the Mariana Islands, lower in the Hawaiian Islands, and intermediate in American Samoa and the Pacific Remote Island Area.

Credit: NOAA Fisheries
Wikipedia
NOAA Office of Ocean Exploration
Courtesy of: The National Oceanic and Atmospheric Administration (NOAA), a Federal Agency of the U.S. Department
of Commerce.

A coral reef is an underwater ecosystem 
characterized by reef-building corals. Reefs are formed of colonies of coral polyps held together by calcium carbonate. Most coral reefs are built from stony corals, whose polyps cluster in groups.

Coral belongs to the class Anthozoa in the animal phylum Cnidaria, which includes sea anemones and jellyfish. Unlike sea anemones, corals secrete hard carbonate 
exoskeletons that support and protect the coral. Most reefs grow best in warm, shallow, clear, sunny and agitated water. Coral reefs first appeared 485 million years ago, at the dawn of the Early Ordovician, displacing the microbial and sponge reefs of the Cambrian.

Sometimes called rainforests of the sea, shallow coral reefs form some of Earth's most diverse ecosystems. They occupy less than 0.1% of the world's ocean area, about half the area of France, yet they provide a home for at least 25% of all marine species, including fish, mollusks, 
worms, crustaceans, echinoderms, 
sponges, tunicates and other cnidarians. Coral reefs flourish in ocean waters that provide few nutrients. They are most commonly found at shallow depths in tropical waters, but deep water and cold water coral reefs exist on smaller scales in other areas.

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