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Real Time Streaming Audio and Spectrograph are currently down due to connectivity issues.

The ACO website will be down on 13 Jan 2018 from 07:00 to 17:00 HST for scheduled maintenance.

New ACO instruments were installed during the ACO-3 cruise on 2014/11/01. Click here for ACO-3 videos.

Bathymetry of ALOHA Observatory Area

Red circle indicates the location of Station ALOHA.
The white line indicates the HAW-4 telecommunications cable.
(click on the thumbnail to enlarge the figure)