4. Milky Mangrove (Excoecaria Agallocha)

Also called the “Blind-your-eye” mangrove, this coastal tree releases a milky sap that can cause temporary blindness and severe skin irritation. Common in Southeast Asia and Northern Australia, it’s a master of chemical defense.
Even touching the leaves or branches can result in a painful reaction. Despite its beauty, this tree hides danger in every drop.