Pathfinder 1e
Trait
Race_Package
Tentacle Sense
While swimming and ungrappled, can spread tentacles as a swift action to gain blindsight 10 feet until moving or attacking.
While swimming and not grappled or grappling, a cecaelia can spread her tentacles wide to form a sensory net around herself as a swift action. This grants blindsight to a range of 10 feet and lasts as long as the cecaelia concentrates or until the cecaelia attacks with a tentacle or moves.