Life on the Reef

Coral Spawns

Clip: Episode 2 | 2m 13s

All at once, billions of coral polyps for hundreds of miles release their egg and sperm into the ocean during the annual coral spawn. As the fireworks begin, the water column fills with what looks like an upside down snowstorm. This mass synchronized event is unlike any known elsewhere in the animal kingdom. Yet as big as it is, there’s also beauty in the detail.

Aired: 07/29/15

Rating: TV-PG

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