Open 9am – 5pm every day except Christmas
The Field Museum will close at 3:00 PM on Saturday, October 25, for a special event. Last admission to the Museum will be at 2:00 PM.
Macro image of the venomous dorsal-fin spine of the world's most venomous fish, the stonefish (Synanceia). The brown sacks along the bony spines hold the venom that is delivered through a hollow fin spine.