Here is the AUV just after it was spotted on the surface.  In this photo, it is relatively easy to see, but since the waves are higher that the antennas and fins, it was often hidden by the waves.

The autonomous underwater vehicle (AUV) is shown here just after it was spotted on the surface. It is relatively easy to see the AUV in this photo. Since the waves are higher that its antennas and fins, the AUV was often hidden by the waves. Image courtesy of Thunder Bay 2010 Expedition, NOAA-OER.

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Related Links

Thunder Bay 2010: Cutting Edge Technology and the Hunt for Lake Huron’s Lost Ships

Thunder Bay 2010: Recovering an AUV

NOAA Ocean Explorer Gallery