Board Thread:Suggestions forum/@comment-33009418-20170911235746/@comment-31507215-20170912195710

Dunlending Tridents have either 250 or 251 durability. Here is a way to get a good idea of the durability:
 * 1) Start (or go into) a creative world with cheats
 * 2) Get the item you want
 * 3) Switch it to survival
 * 4) Use the item in a way which uses durability
 * 5) Hit "F3" and "H" at the same time
 * 6) Hover over the item in the inventory
 * 7) The durability should be shown - add 1 to the larger number, and you should have the base durability of the item, as long as it doesn't have any durability modifiers