Jellyfish
The invertebrates of the Black Sea are the silent protagonists of a fascinating ecosystem. Among the most common are jellyfish, such as Aurelia aurita, known for its transparent appearance, and Mnemiopsis leidyi, an invasive species that has disrupted local balances.
Mollusks
Mollusks like mussels and oysters are essential for filtering the water, keeping it clean. They also form dense colonies on rocks and shipwrecks, creating habitats for other marine species. Some mollusks, like whelks, are predators that help control populations of other invertebrates.
Shrimp and crabs
Shrimp and crabs in the Black Sea are vital scavengers, cleaning the seabed by feeding on organic matter and detritus. Species like the Carcinus aestuarii (green crab) play a crucial role in maintaining the balance of the ecosystem by preying on smaller organisms. These crustaceans also provide an essential food source for larger predators, linking different levels of the marine food chain.
Let’s not forget the tiny planktonic organisms, vital for the food chain, feeding fish and other marine inhabitants. Every invertebrate, big or small, plays a crucial role in making the Black Sea a unique and vibrant marine environment.
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