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Multichannel seismic streamer

By Pacific Coastal and Marine Science Center
A very long, green hose is coiled loosely and haphazardly sitting on a boat deck with another smaller beige hose nearby.
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Detailed Description

Multichannel seismic streamer (green) on the fantail deck of R/V Solstice. The streamer contains dozens of hydrophones (underwater microphones) that record sound transmitted by an acoustic source bounced off features beneath the seafloor. The tan cable is part of the sound source called a minisparker.

Sources/Usage

Public Domain.