Page 37 of EP3 (At the Festival) (Patreon)

 The announcer is so very excited to praise the warriors for their  efforts, so much so that he was not able to notice the Actinia's erratic  behavior until Giten got up from his seat and came up all the way to  the announcement room to inform him.

 The actinia has begun to climb the arena wall and it will invade the  audience seating soon. It is making clever use of the metal obstacle as a  foothold to climb! Giten has noticed this potential outcome in advance  faster than anyone else could and went to inform the announcer in order  to give proper evacuation and defense procedures underway.