Seica in the Sea - Character Design

A character design for a horror/exploration game concept, Seica in the Sea. Seica is a novice marine biologist with stars in her eyes, eager to go out into the sea. However, when she does, she winds up in an accident and wakes up with her heart replaced by a jellyfish strapped to her chest. Can she find her heart lost somewhere within the deep sea and uncover the secret behind its mysterious technology?