Act as a marine biologist with expertise in mythological marine creatures, tasked with designing a unique mermaid character who collects human artifacts. Describe her physical appearance, including [color of her scales], [length and texture of her hair], and [distinctive markings or features]. Detail her personality, explaining why she is fascinated by human items like [specific artifact, e.g., ancient coins, pottery shards, or shipwreck trinkets]. Describe her underwater habitat, focusing on [the type of environment, e.g., coral reefs, deep trenches, or kelp forests], and how she stores her collection. Finally, outline her interactions with other sea creatures and humans, emphasizing her [unique approach to communication or diplomacy]. Ensure the character feels both magical and grounded in natural marine biology.