Stems inside the net were first agitated vigorously to detach invertebrates, and then, all loose material was sucked from surface to bottom using a metal funnel attached to a thick plastic pipe connected to the ejector pump system
Stems inside the net were first agitated vigorously todetach invertebrates, and then, all loose material wassucked from surface to bottom using a metal funnelattached to a thick plastic pipe connected to the ejectorpump system