He knew not why this human was under the water so far, but Haru couldn't ignore the stranger's need of help. It was clear as he swam closer to inspect that something had went wrong, disallowing him from returning to the surface in time. The siren watches just long enough to realize this, before he gracefully and quickly swims to his aid. Upon reaching him, Haru saw the cause now -- thick seaweed tied up onto his leg, keeping him there. With sharp nails, Haruka breaks him free, and with his other arm pulls the human close to him. Blue tail fins push them upwards, until they break the surface of the ocean.
A shore wasn't too far, so Haru brings him this way while carefully keeping the human's head above the water. It didn't take long at all to get there, pulling him onto the sand just far enough to be safe from the tide.
Haruka stared down at him for a moment, inspecting. Due to his ability to walk the lands as well as swim the seas, he was quick to understand what would be needed to be done. Pinching his nose, Haru took a deep breath and began to lean in, preparing to perform CPR as he knew how to . . .
. . . but luckily, a cough from the human indicated he was just fine. Haru jerked back in response, his eyes widening for a moment. By reflex, he was tempted to go back into the water, but he wanted to be sure the human would be fine.
❝Are you alright?❞ he asks after the coughing subsides, tilting his head down at him, hovering close.