A team has started an underwater survey for Amelia Earhart's lost plane on Nikumaroro.
Earhart and Fred Noonan vanished on July 2, 1937, on a flight around the world.
Three groups run the trip: the Archaeological Legacy Institute, Purdue Research Foundation, and Purdue University.
The team sailed five days from Tarawa to reach the remote atoll.
The underwater survey of the lagoon began on Wednesday, October 14.
A magnetometer hunts for metal. Sonar builds a picture of the lagoon floor.
The team studies a shape in the lagoon, first seen in satellite images in 2020.
Some see a possible plane part. Others say it is most likely a fallen tree.
A New Zealand museum released 47 aerial photos of the island from 1938.
Coconut crabs roam at night, so the team sleeps aboard its ship.
The team expects a first update within about 48 hours. No plane has been found yet.
Read the full explainer: what the team found, what its tools do, and what proof looks like.
Get the full breakdown, key numbers, and what happens next.
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