Warblefish's jawbone

A warblefish's jawbone (short name: jawbone) is a strange piscine fossil which, upon opening underwater, allows its user to speak to other subaqueous adventurers as if he or she were standing beside them.

Pieces

(1) The teeth for a warblefish's jawbone, level 1

(1) The mandibles for a warblefish's jawbone, level 1

(1) The bone for a warblefish's jawbone, level 1

(1) The hinge for a warblefish's jawbone, level 1