NOAA is diving with their ROV!

[Merman Dan]

Okeanos Explorer "From February 25 to March 18, scientists will continue 2015 Hohonu Moana expedition efforts to explore deep-water habitats in and around Papahānaumokuākea Marine National Monument. The expedition will include work on seamounts in the Mid-Pacific Mountains while en route to port in Kwajalein."
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[Mermaid Jaffa]

Did you read and hear the ocean sounds in the Mariana Trench?
So cool! I wonder what the screeching is.