The word "tusk-shell" is often used to describe a long, cylindrical marine animal with a hard, spiraled shell and a protruding, tusk-like feature. However, there are several synonyms for this unique creature, including scaphopod, tooth-shell, elephant's tusk, and sea snail. Scaphopods, for example, are similar to tusk-shells but have a more conical shape. Tooth-shells, on the other hand, have a more pronounced tooth-like feature. Elephant's tusk is a colloquial name often used in reference to the tusk-shell's long, ivory-like appearance. Regardless of the synonym used, tusk-shells remain an intriguing and fascinating species of marine life.