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A live coral polyp with turquoise tissue and brown tentacles closes its mouth (the...
Soft Coral Close-Up
These neon balloons weren't blown up for a party: they are the colorful tentacles...
Harp Seal Pup at Sunset
A harp seal (Phoca groenlandica) pup rests on the ice at sunset in the Gulf of St....
Coral Growth Rings
Ultraviolet light illuminates the growth rings in a cross-section of a 44-year-old...
The Coral Gardener
When coral reefs are damaged, they sometimes struggle to grow back because there...