watercolor artwork showcases diverse marine creatures like sharks, octopuses, and seashells

illustrations oceanography handpainted environment watercolor underwater decoration collection showcases creatures octopuses seashells whimsical seashell starfish wildlife creative dolphins colorful undersea projects artwork diverse octopus aquatic vibrant ecology coastal surface pattern habitat biology playful oceanic marine sharks nature colors design shells crafts shark coral ocean beach waves stars decor theme craft like life fish blue sea art diy