set of crab, sea horse, cancer, seashell, sea urchin, starfish. sketch .

abstract aquatic armor art background biology cancer carcinoma cockleshell collection computer contour crab crawfish crayfish curl doodle fin graphic head helix image leg life mustache nature sand scallop scroll sea seahorse seashell set shape shell silhouette simplicity sketch snail spiral starfish summer swirl symbol tail travel tropical undersea vector volute