Armor Check Penalty

Using this skill, a land-based creature can swim, dive, navigate underwater obstacles, and so on.

Special: You can Take 10 when making a Swim check, but you can't Take 20.

Retry: A new check is allowed the round after a check is failed.

Swim Edit

A successful Swim check allows you to swim one-quarter your Speed as a Move Action or one-half your speed as a Full-Round Action. Roll once per round. If you fail, you make no progress through the water. If you fail by 5 or more, you go underwater and must hold your breath with an Endurance check until you can reach the surface by succeeding on a Swim check. The DC for the Swim check depends on the situation:

Calm Water 10
Rough Water 15
Stormy Water 20
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