33 All Natural Seashells Medium Large - DIY Crafts, Jewelry, Hermit Crab Growth Shells Aquarium Decor HCSA04 By AG All Natural Seashells Decorations By AG - 33 All Natural Seashells Hermit Crab Growth Shells Aquarium Decor HCSA04 By AG Sea shells measure ~1 1/2 - 2" wide. Mouth openings measure ~1/2 of the shell size. Excellent for beach crafts, nautical decor, beach weddings, vase fillers, etc. Nice homes for pet hermit crabs and great as aquarium decor! All natural wood/floral/seashells will have imperfections and may have slight variations in size/color as they appear to in nature! Please check size to make sure they fit your purpose!