Crustaceans, celenterates, and arachnids are represented by specific invertebrate species such as actinia and păianjenul.
Crustaceans are a diverse group of arthropods that include crabs, lobsters, crayfish, and shrimp. They dominate aquatic environments and can also be found terrestrially, such as pill bugs.
Celenterates are a phylum of aquatic invertebrates that include creatures like actinias, which are sea anemones with stinging tentacles.
Arachnids are represented by creatures like the păianjenul, which are spiders belonging to this class.
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