** Stings from sea lice, jellyfish, fish, sea shells, and some species of coral.

** List of command-line interpreters, programs occasionally referred to as " shells "

** shell for terminal shells, SFTP and exec requests ( including SCP transfers )

** Qana Massacre: Over 100 Lebanese civilians are killed after Israel shells the UN compound in Qana.

** Tortoise carapaces ( upper shells )

** artillery shells, specifically unexploded ordnance

** Rowing shells are extremely long and narrow, and are intended to convert as much of the rower's muscle power as possible into speed.

** Capacity: 24 shells

** Capulidae, the cap shells ( junior synonym Trichotropidae )

** Ficidae, the fig shells

** Aporrhaidae, the pelican's foot shells

** Bursidae, the frog shells

** Tonnidae, the tun shells

** Hipponicidae, the hoof shells

** Xenophoridae, the carrier shells

** Crest: On a wreath Argent and Vert, between two triton shells Gules and surmounting an annulet Sable fimbriated of the first flamant of the third, three spearheads of the first each bearing in base an ermine spot of the fourth.

** Paleozoic molluscs with isostrophically coiled shells of uncertain position within Mollusca ( Gastropoda or Monoplacophora )

Nevertheless, a few genera in the slipper snail family ( Calyptraeidae ) may have changed their developmental timing ( heterochrony ) and regained a coiled shell from a limpet-like shell.