(Sarah of the Clue Crew points to an anatomical animation on the monitor.)  Making it hard to communicate, inflammation of the structure above the trachea is known as this
The natural history of the sperm whale : its anatomy ... [PAR] Happiness of the Crew on board the "Sarah and Elizabeth"  proper conduct of ... 
known commonly under the name of the spermaceti whale,  by the French, as 
..... prefix a short description of its external form, and some anatomical points in its 
......