Close-up of the vent opening of a Sea Potato shell. These are small delicate members of the Sea Urchin family that live buried in muddy sands

---

Close-up of the vent opening of a Sea Potato shell. These are small delicate members of the Sea Urchin family that live buried in muddy sands below the low-tide mark

---

Size: 4927px × 3399px
Location: Anglesey, UK
Photo credit: © Nick Greaves / Alamy / Afripics
License: Licensed
Model Released: No

Keywords: -littoral, ancient, anus, aristotle’, bands, case, coast, coastal, cordatum, delicate, diving, domed, echinocardium, echinodermata, echinoidae, empty, heart, hollow, hydraulics, invertebrate, iridiphores, irritant, jaws, lantern, line, littoral, marine, mouth, moving, potato, protection, radial, radiating, relative, rows, sands, sea, seas, seasdie, seashells, seashore, seashores, sedentary, shallow, shell, shore, skin, slow, spines, spiny, spots, starfish, strand, suckers, symmetry, texture, tide, top, urchin, vegetarian, vent, waters