Selkie (CR 1)

Medium Humanoid (Aquatic and Shapechanger)
Alignment: Usually neutral
Initiative: +1 (Dex); Senses: Listen +6 and Spot +6

AC: 16 (+1 Dex, +5 natural), touch 11, flat-footed 15 in seal form; 15 (+1 Dex, +4 mithral shirt), touch 11, flat-footed 14 in humanoid form
Hit Dice: 3d8 (13 hp)
Fort +1, Ref +4, Will +1
Speed: 30 ft., swim 90 ft.
Space: 5 ft./5 ft.
Base Attack +2; Grapple +1
Attack: Bite +3 melee, or mithral longsword +1 melee
Full Attack: Bite +3 melee, or mithral longsword +1 melee
Damage: Bite 1d6-1, mithral longsword 1d8-1
Special Attacks/Actions: -
Abilities: Str 9, Dex 13, Con 11, Int 12, Wis 10, Cha 12
Special Qualities: Alternate form
Feats: Alertness; Weapon Finesse
Skills: Craft (any one) +3, Listen +6, Perform (chant, Spot +6, Swim +11, melody, ode, and storytelling) +5
Advancement: By character class
Climate/Terrain: Cold aquatic
Organization: Solitary, pair, family (3-10), or tribe (12-30)
Treasure/Possessions: Standard

Source: Fiend Folio

Alternate Form (Su): A selkie has only limited control over its shapechanging abilities. When in the ocean, in is in seal form; when on land, in is in humanoid form. Only at the in-between places - shallow waters an the coast, a narrow strip of beach - can a selkie choose which form to use. Changing form is a free action. Equipment a selkie in humanoid form is wearing or carrying transforms to become part of its seal form, and magic items cease functioning while in remains in this form.

Skills: Selkies have a +8 racial bonus on any Swim check to perform some special action or avoid a hazard and can always choose to take 10 on Swim checks, even if distracted or endangered.

Selkies in their natural form attack by biting their opponents, but they are not strong and do not prefer melee. In human form, they wield weapons forged of mithral and wear mithral armor.

Aquatic Subtype

Creatures with the aquatic subtype always have swim speeds and thus can move in water without making Swim checks. An aquatic creature can breathe underwater. It cannot also breathe air unless it has the amphibious special quality.

Shapechanger Subtype

A shapechanger has the supernatural ability to assume one or more alternate forms. Many magical effects allow some kind of shape shifting, and not every creature that can change shapes has the shapechanger subtype.

Traits: A shapechanger possesses the following traits (unless otherwise noted in a creature's entry).