Barathu
Source SF Player Core pg 48
You grow sturdy lower limbs that allow you to walk on land. Increase your Speed to 25 feet. Additionally, you gain the Adaptive Locomotion action.
Adaptive Locomotion [one-action] Morph Frequency once per hour
You transform your limbs into either flippers or hooked pseudopods, to better traverse the surrounding environment. If you select flippers, you gain a swim Speed of 20 feet. If you select hooked pseudopods, you gain a climb Speed of 20 feet. This transformation lasts for 10 minutes.