World record broken for underwater living
3 July 2014 Last updated at 03:44 BST
Oceanographer Fabien Cousteau and his team have broken the record for the number of days spent living under water.
The record was formerly set by his grandfather the famous ocean explorer Jacques Cousteau.
The scientists had been living at an underwater laboratory off the Florida coast since 1 June to study what effects climate change and pollution are having on a coral reef.
Emily Thomas reports.