Water Sense: The Sahaugin can sense the location of a creature through vibrations in the water, to a distance of 100ft. This is a targeting sense.
Freshwater Sensitivity: A Sahaugin immersed in Fresh Water must make a DC 10 Resilience check every moment or gain 1 point of Fatigue. It cannot restore fatigue until it returns to a Salt Water environment for at least one moment.
Light Blindness: When exposed to Bright Light, Sahuagin are Partially Blinded.
Aquatic Nature: Sahuagin can exist for up to an hour outside water without ill effect. After that time, they must make Resilience checks every hour or suffer from Dehydration. Sahuagin also gain a +8 Racial bonus to Swim checks (inc) and a +4 Racial bonus Stealth, Listen, and Spot checks while underwater.
Speak with Sharks: The Sahuagin can communicate telepathically with Sharks up to 150ft away, communicating simple feelings or concepts. They gain a +4 Racial Bonus to Animal Care when associated with Sharks.