Specimens were collected from sediments of seagrass beds dominated by Enhalus acoroides at Banpaklok, Phuket Island, Thailand (8ºN, 98º20'E) by using a hand corer of 3.5 cm diameter x 10 cm length. Sediment samples were subsequently sieved through a 500 micrometer and a 63 micrometer sieve. The meiofauna remaining on the latter sieve was fixed for 24 hours in a solution of 10% formalin and Rose Bengal. Copepods were separated, put in vials and fixed in 6% buffered formalin, and subsequently preserved in ethanol after sorting in the laboratory.