Plankton are non-directional plants and animals that play an important role in the food web. Phytoplankton form the base of the marine food chain, while zooplankton act as major link in the food webs of different marine ecosystems. Plankton biomass in the Gulf of Aqaba is generally low. Phytoplankton rarely exceed 1mg Chl a m^-3, with Trichodesmium and other net- (> 65 µm) or micro- (>20 µm) phytoplankton comprising only a minor fraction of the total photosynthetic biomass. Zooplankton biomass is also very low with annual average rarely exceeding 1000 org. m^-3.

The biological oceanography group work closely and in good harmony with the larger oceanography group to understand the effects of the physical and chemical changes on the biological characteristics of the Gulf of Aqaba. Assistance is provided in the biological oceanography group by the active team of assistants: Abd Allah Al-Momany and Maysara Alamor.