Archives of Nethys

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Aquatic Rules / Underwater Movement

Swimming Example

Source Starfinder #36: Professional Courtesy pg. 47
Suppose a creature has a swim speed of 30 feet. With a successful check to swim (if required), it can swim forward 5 feet, turn 45 degrees to the left, and swim 5 feet diagonally, all of which costs a total of 15 feet of its movement. The creature can then turn 90 degrees to ascend 5 feet straight up, which costs another 15 feet of movement (10 feet to change its direction and 5 feet to move). At this point, it has used its 30 feet of swimming movement, so its move action ends.