West Indian Top Shell (Cittarium pica) on a rock on the South Shore, Bermuda, at sunrise. A species of edible sea snail, they are herbivores and feed on algae.

West Indian Top Shell (Cittarium pica) on a rock on the South Shore, Bermuda, at sunrise. A species of edible sea snail, they are herbivores and feed on algae.

Common hermit crab (Pagurus bernhardus), in a common whelk shell (Buccinum undatum) in a rockpool, The Gower Peninsula, Wales, United Kingdom, Europe

Dog whelks (Nucella lapillus) and clusters of their eggs attached to a rock exposed at low tide, The Gower Peninsula, Wales, United Kingdom, Europe

A burgundy snail on a stone, family-hiking with a donkey in the Cevennes mountains, France

Infusion in the sauna

Wooden tub in Finnish sauna

Infusion in the sauna

Hawaii, Oahu, A bunch of fresh Limpets Opihi laying on a rock.

Hawaii, Oahu, A bunch of fresh Limpets Opihi laying on a rock.

Hawaii, Oahu, A bunch of fresh Limpets Opihi laying on a rock.

Hawaii, Oahu, A bunch of fresh Limpets Opihi laying on sand.