Otterfolk

Generally peaceful, but bearing a strong enmity against reptilian creatures. Most reside in the Region - The Sleeping Mire after retreating from their homeland on the eastern continent during the last Yuan-Ti invasion about 500 years ago.
Hold Breath and Reptile Foe traits; Secrete Oil action; Small size; darkvision 30 ft.; walking speed of 25 feet, climbing speed of 15 feet, swimming speed of 30 feet
TOB2, pg. 288