MIT-WHOI Joint Program graduate students Alice Alpert (left) and Liz Drenkard (center) and U.S. Fish and Wildlife Service representative Kelsie Ernsberger (right) snorkel above a large coral at an atoll off Jarvis Island in the central equatorial Pacific. Alpert uses corals to investigate how climate changes may affect a major major ocean current called the Equatorial Undercurrent. (Photo by Chip Young, National Oceanic and Atmospheric Administration)

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MIT-WHOI Joint Program graduate students Alice Alpert (left) and Liz Drenkard (center) and U.S. Fish and Wildlife Service representative Kelsie Ernsberger (right) snorkel above a large coral at an atoll off Jarvis Island in the central equatorial Pacific. Alpert uses corals to investigate how climate changes may affect a major major ocean current called the Equatorial Undercurrent. (Photo by Chip Young, National Oceanic and Atmospheric Administration)