Marine invertebrates are a diverse group of animals that live in the ocean and don't have a backbone. There are many different types of marine invertebrates, such as crabs, jellyfish, sea stars, squid, and coral. These creatures come in a wide range of shapes, sizes, and colors, and they have adapted to living in many different types of ocean environments, from shallow coral reefs to deep-sea trenches. Marine invertebrates play important roles in the ocean ecosystem, providing food and habitat for many other animals, and helping to keep the ocean healthy and balanced.
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