Punning Name of Sesame Street's Turtle Character

This page is the CodyCross answer for the clue below from Architectural Styles, Group 1177, Puzzle 2 (Norma Sklarek).

Question is: Punning Name of Sesame Street's Turtle Character

and the answer is: SHELLY

Word Meaning:

SHELLY — Composed of the shells of dead marine creatures

Definitions from Wiktionary.