SIGHTING THE ISLAND
The battle between Scar and octopus lasted for about 10 minutes, and those 10 minutes might have been the most painful 10 minutes of the octopus's life. While they were battling, Scar took out his frustration on the octopus.
He managed to tear the octopus hands whenever he threw an attack. The octopus screamed every time that one of its hands is torn off its body, and although it hurt, the octopus could regenerate the lost arms in almost an instance.
Yellow goo from the ripped-out octopus tentacles filled a particular side of the sea. After ripping and punching parts of the octopus, it couldn't regenerate anymore, that was when Scar took the opportunity to reach its head and give it a finishing blow that turned its brain to liquid.