Maritime traffic and man activity at sea increases steadily, causing underwater noise which can have major impact on marine fauna.

As a consequence, solutions must be found to mitigate underwater noise related to maritime transport, in order to achieve a good environmental status consistent with the objectives of the European Marine Strategy Framework Directive.

This is the issue of AQUO, a collaborative European Research Project in the scope of the 7th Framework Program, theme "Sustainable Surface Transport" topic coordinated with the "Oceans of Tomorrow".