Generate an anthromorphic image showcasing an underwater adventure: 'Mer-Cat Odyssey'. In this vibrant underwater scenario, an anthropomorphic cat character merges human and feline traits, having a sleek cat-like face with large expressive eyes in the tradition of Anime, and boasts a captivating mermaid tail. Set within this underwater realm, the Mer-Cat is in the midst of swimming and exploring a vividly colored and complex coral reef brimming with a variety of tropical fish. The background should be lush with aquatic plants and intricate seashells, showcasing the beauty and diversity of the marine ecosystem.