Trap-loading efficiencies and fluid flow simulations. (A) Bead occupancy histograms from bead loading experiments with different trap apertures, chamber heights and bead sizes. Gray asterisks denote instances when beads were too large to consistently enter chambers. (B) Simulated flow profiles within and between unoccupied traps under laminar flow conditions. Inset shows flow profiles around a rigid body as a proxy for an Aiptasia larva. (C,D) Ratio of simulated flow within and between traps (Q1/Q2) when unoccupied (C) and (D) occupied by simulated Aiptasia larvae for 3 chamber heights.