+2 to One Ability Score: Half-sea elf characters get a +2 bonus to one ability score of their choice at creation to represent their human ancestry.
Medium: Half-sea elves are Medium creatures and have no bonuses or penalties due to their size.
Normal Speed: Half-sea elves have a base speed of 30 feet.
Amphibious: Half-sea elves may breathe underwater as easily as they can breathe air. They are also adept at swimming, and have a 30 feet swim speed. They gain a +8 racial bonus on Swim checks and may take 10 on Swim checks under any circumstances.
Low-Light Vision: Half-sea elves can see twice as far as humans in conditions of dim light.
Elf Blood: Half-sea elves count as both elves and humans for any effect related to race.
Elven Immunities: Half-elves are immune to magic sleep effects and get a +2 racial saving throw bonus against enchantment spells and effects.
Keen Senses: Half-sea elves receive a +2 racial bonus on Perception skill checks.
Languages: Half-sea elves begin play speaking Common and Elven. Half-sea elves with high Intelligence scores can choose Aquan, Gnome, Halfling, and Sylvan as bonus languages.