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Grab
 |
Jose Garcia collects invertebrates using
the grab. |
This fancy invertebrate equipment is really a mini-construction instrument.
"You have to watch out,
though..." |
The grab allows scientists to reach into the bottom of the channels and pull up known quantities of gravel, sand and silt. This sample can then be dumped into a bag or tray and sorted through at leisure.
You have to watch out, though. Some tiny sand dwelling catfish have sharp spines that hurt as much as a bee sting, and flat water beetles have a nasty habit of biting as you collect them.
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— Reported by Jensen Montambault