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The following sample traps represent just some of the possibilities when constructing traps to challenge the player characters.
Click here for the full rules on Traps.

Clam Clamp

Source Ultimate Wilderness pg. 173
Associated Terrain any oceans
Type mechanical; Perception DC 20; Disable Device DC 17


Trigger location; Reset automatic
Effect The classic “clam clamp” trap utilizes the heavy shell of a giant clam, but any similarly large bivalve mollusk or even flotsam can work. A clam clamp is typically set with a lure, such as a piece of shiny treasure. When a creature walks over a clam clamp or attempts to take the treasure, the clamp snaps shut and attempts a grapple with a +15 bonus on the combat maneuver check. The weight of the clam clamp is enough to hold a creature in place until the grappled creature can escape. A clam clamp located in an underwater area is more difficult to craft but also more dangerous to air-breathing creatures due to the fact that it can hold a creature underwater until it drowns; an underwater clam clamp’s CR is 5.

See Wilderness Traps for information on this traps Associated Terrain.