Editing EcoSCOPE (section)

==Deployment==
Although an ROV may be very small and quiet, it is impossible to approach feeding [[Atlantic herring|herring]] closer than 40&nbsp;cm. The ecoSCOPE allows observation of feeding herring from a distance of only 4&nbsp;cm. From 40&nbsp;cm, the herrings' prey ([[copepod]]s) in front of the herring are invisible due to the [[Deflection (physics)|deflection]] of light by [[phytoplankton]] and microparticles in highly productive waters where herring live. With the ecoSCOPE, the predators are illuminated by natural light, the prey by a light sheet, projected via a second endoscope from strobed [[LED]]s (2 ms, 100% relative intensity at 700&nbsp;nm, 53% at 690&nbsp;nm, 22% at 680&nbsp;nm, 4% at 660&nbsp;nm, 0% at 642&nbsp;nm).

By imitating the long, thin snout of the [[garfish]] protruding into the security sphere of the alert herrings, an [[endoscope]] with a tip diameter of 11&nbsp;mm is used. The endoscope is camouflaged to reduce the brightness-contrast against the background: the top is black and the sides are silvery. Additionally, the front of the ROV is covered by a mirror, reflecting a light gradient resembling the natural scene and making the instrument body virtually invisible to the animals.  A second sensor images other copepods, phytoplankton and particles at very high magnification. Another advantage of these small "optical probes" is the minimal disruption of the current-field in the measuring volume, allowing for less disturbed surveys of microturbulence and shear.

Another video can be seen in the article for [[Atlantic herring]].

An ecoSCOPE was also deployed to measure the dynamics of particles in a polluted estuary: see image on [[Particle (ecology)]], another as an underwater [[environmental monitoring]] system, utilizing the orientation capacity of juvenile glasseel.

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Image:Krillspitballkils3.jpg|''In situ'' image of feeding [[Antarctic krill]]. Visible is a green spit ball and a green fecal string, important components of the [[biological pump]]. 
Image:ECORAN42.JPG|The little tube extending from the nose is visible
Image:Filterkrillkils2.gif|Filter feeding of Antarctic krill, slowed to 1/12th of actual speed
</gallery>