Shelly

After all, we live today in an unusual world: sea level is low, the continents are dispersed, ice occupies the poles, and the shelly fauna of the oceans is composed largely of aragonite rather than calcite.

the shelly shore

Shrined are your offspring in a chrystal cradle, / Brighter than Helen's ere she yet had burst / Her shelly prison.

It is seen commonly in connection with flat-foot, and where the horn of the wall is thin and shelly.

a shelly beach

the snail, whose tender horns being hit Shrinks backward in his shelly cave.