Antarctic krill swimming between the Southern Ocean's surface and seafloor depths, make a "surprisingly small" contribution ...

Endurance also routinely deploys her two Survey Motor Boats, fitted with Single Beam Echo Sounders, to conduct shallow water surveys in areas inaccessible to the ship.(MOD) Photo: HMS Endurance's ...

However, even with modern echo sounders, there are still many hardships to overcome when conducting bathymetric surveys. These include high cost, unpredictable weather, high ship traffic ...