Case file · High strangeness
'Julia', the sound from the ice
On 1 March 1999 NOAA's hydrophone array in the equatorial Pacific recorded a long sound that rose and fell for about two and a half minutes, which researchers named 'Julia'.
1999 CE · -8.00, -95.00 · status: explained
The account
Like the Bloop, it was loud enough to be heard across the Pacific array. Because the bearing was uncertain, its origin could lie anywhere between Antarctica's Bransfield Strait and Cape Adare; the position here is the hydrophone array.
The sceptical view
NOAA concluded that it was most likely a large iceberg that had run aground and was scraping the seabed off Antarctica.