Ancient Glow: Scientists Discover 540 Million-Year-Old Bioluminescent Corals

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Laboratory photo of bioluminescence in the sea whip Funiculina sp. observed under red light. Credit: Manabu Bessho-Uehara © 2020 MBARI

Bessho-Uehara and Quattrini performed fieldwork from the shallow to the deep sea floor including Nagoya University’s Sugashima Marine Station, near the city of Toba in central Japan to find more bioluminescent specimens. They found previously unidentified bioluminescence in two types of Hexacorallia and five types of Octocorallia.

“I was excited, as we were the first to discover bioluminescence at the genus level in five genuses: Bullagumminzoanthus, Keratosidinae, and Corallizoanthus corals as well as Echinoptilum sea pens, and Metallogorgia deep sea fans,” said Bessho-Uehara about the discovery. A phylogenetic tree is like a family tree except that it uses evolutionary relationships based on genetic data instead of bloodlines. It serves as a visual representation of the evolutionary connections and shared ancestry among diverse groups of organisms.

 

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