Using satellite images to help either - even better. I came across this great paper using WorldView-2 images like this
they were able to locate and track whales in the ocean. Worldview-2 has a 'coastal blue' band which i have mentioned a few times - in this case it has helped them to spot submerged whales.
The image below demonstrates a surfaced whale and also a submerged whale. Only the coastal blue band spotted it!
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