Zooplankton Winter Autumn Summer Spring Total Percentage (%) Al-Sallal Hareer Al-Mashab Al-Sallal Hareer Al-Mashab Al-Sallal Hareer Al-Mashab Al-Sallal Hareer Al-Mashab Cirriped larvae 79.2 131 414.5 719 2724 536 103 534 1402 3824 32370 1185628 1218465 88.5 Cladocera 88.8 261.3 79.2 209 395 387 9061 18226 11051 40204 41971 23969 145902 10.6 Nauplii 271 332 432.5 278 356 54 32 603 505 19 34 19.3 2936 0.21 Cyclopoida 192 353 120.7 73 552 51 84 485 72 115 43 96 2237 0.16 Harpacticoida 26.4 21 28.8 6.6 7.3 24 - 7 0.02 76 34 58 289 0.02 Calanoida - - 1.8 - - - - - - - - - 1.8 0.0001 Total of Copepoda 489.4 706 538.8 358 915 129 116 1095 577 210 111 173.3 5463 0.4 Zoea of Crab - - - 6.6 0.01 3.6 72 194 88 2 - 2 368 0.03 Zoea of shrimp - - - 6.6 0.02 - 12 49 48 19 - 19.3 154 0.01 Ostracods - - 1.8 0.03 0.01 - - - 0.02 - - - 1.85 0.0001 Insect larvae - - - 0.06 0.06 - - - - - - - 0.12 0.000001 Amphipoda - - - 0.01 - - - - - - - - 0.01 0.000001 Total of Crustacea 657.4 1098.3 1079.3 1299.3 4034 1055.6 9364 20098 13166 44259 64452 1209792 1370355 99.5 Rotifers 48 34.7 23.4 2134 3632 20 4 28 136 1 21 87 6169 0.45 Foraminifera 9.6 6.2 16.2 0.01 - 1.8 4 - - 2 - - 40 0.003 Gastropoda - - 1.8 6.6 - - - - - - - - 8.4 0.0006 Annelida 2.4 - - - - - - - - - - - 2.4 0.0002 Oligochaeta - 0.02 0.04 - - - - - - - - - 0.06 0.000004 Fish larvae 0.02 - 0.07 - - - - - - - - 0.1 0.19 0.000001 Total of zooplankton 717.4 1139.2 1120.8 3439.9 7666 1077.4 9372 20126 13302 44262 64473 1209879 1376575 100

Table 2: Zooplankton density (ind./m3) at Al-Hammar Marshes collected from January – December 2011.