Unrealistic materials, awkward proportions, lifeless marine life, stiff composition, artificial lighting, loss of depth, disjointed elements, lack of harmony, repetitive textures, disproportionate marine life, amateurish execution, unnatural movement, incongruent elements, chaotic scene, exaggerated features, mechanical appearance, lack of finesse, disconnection from the environment, cluttered design, lack of realism, distorted textures.