SHELL

Tue, 14 Jan '25

Prominent part of a Teenage Mutant Ninja Turtle costume

Thu, 2 May '24

Mobile home?

Mon, 21 Aug '23

Something you might hold to your ear in order to hear the first parts of 18-, 24-, 52- and 62-Across?

Sun, 17 Oct '21

A shore thing

Mon, 28 Jun '21

Conch, e.g.