The removal of turbidity is a prime objective in the treatment of seawater, especially in the production of potable water. The water turbidity exists because of the colloidal particles or large-weight molecules that remain in suspension in the untreated solution. This study investigated the performance of a new gel layer for the treatment of highly turbid seawater. Based on the periodic turbidity values in the Arabian Gulf over the year, the chosen seawater samples had the turbidity values of 4.8 NTU, 76.1 NTU, and 99.7 NTU. The gel filtration layer showed promising adsorption capabilities and its physical appearance achieved a cohesive matrix form, which resulted in good mechanical strength. The proposed gel filter was effective enough for the removal of turbidity from the selected seawater samples with more than 98.5% efficiency.