The World Beneath
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Оглавление
Richard Smith. The World Beneath
Diving In
How the Reef Works
The Coral Triangle
New Discoveries of the Twenty-First Century
Things That Live on Things
The Unseemly World of Anemonefish
Pygmy Seahorses: Tales from the Stables
Parasites Rule the Reef
Colors of the Reef
Flashers and Fairies
Coral Reefs in the Twenty-First Century
Epilogue
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Spawning Acropora coral. Wakatobi, Sulawesi, Indonesia.
Mass coral spawning typically occurs a few nights after a full moon. Environmental cues remain vital in enabling one hundred-plus species of corals and other organisms to orchestrate their spawning on the exact same evening of the year, with each species typically utilizing just a four-hour window in which to spawn. Various environmental cues such as day length and luminance from the moon appear to allow the creatures to synchronize with other members of their own species.23 Other organisms plan their schedules around the same yearly cycle to exploit the coral spawning. Whale sharks make great migrations from across the Indian Ocean to coincide with the spawning at Ningaloo Reef in Western Australia, as the spawn significantly contributes to the sharks’ annual dietary intake. The tourism industry has also developed around the regularity of the spawning and the shark’s arrival.
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