Yellow Octoroks are a stronger variety of Octorok, possessing more health than them but share the same beat pattern as their fellow cephalopods. They will only surface when Cadence, Link, Yves, or Zelda walks in front of them, staying exposed for a total of four music beats. After emerging, they will fire a rock-like projectile at the heroes on the second beat and will remain exposed for two more beats before returning underground or underwater. If the heroes are too close, they will not emerge from their hiding place until they're at least two tiles away from them either horizontally or vertically.
They can appear either on land or within shallow water, remaining hidden save for the grass-like stem on their head poking out of their hiding spot.