seashell set. outline of starfish and rocks. hand drawn nautical clipart bundle. black line art of

seashell set vector outline starfish line drawing clip art sea shell black hand drawn illustration shellfish nautical white isolated background marine ocean star clipart contour bundle conch beach linear graphic cockleshell scallop sketch clam monochrome summer barnacle shape seashore oyster draw doodle mollusk coloring stone rock pebble card