The sea turtle which travelled thousands of miles towards Tonga before changing course the day before a volcanic eruption has gone missing.
After being fit with a tracker so scientists could track their progress, Tilly, three, had recently been released into the waters near Australia and spent the next 47 days swimming east swimming more than 2,000 miles in 78 days.
On January 14 she suddenly turned around - 24 hours before Hunga Tonga–Hunga Ha'apai’s violent underwater eruption sent ash 60,000 feet into the sky, causing tsunamis devastating the islands.