|Deep Sea Anemone (Image Source)|
Sea Anemones also have a single mouth opening that is surrounded by tentacles. Their tentacles serve two purposes. The first is protection. You see, the slightest touch causes the tentacles to shoot out a neurotoxin-filled filament. This toxin paralyzes and then leads to the second purpose of the tentacles: feeding. The Anemone then uses them to push the paralyzed creature into their mouth opening. Interestingly, their mouth opening is the only orifice an Anemone has, so it also serves as the final stop in their digestive system.
|Clownfish with Anemone (Image Source)|
Anemones are famous for their symbiotic relationship with the ever so adorable Clownfish. Clownfish have a protective layer of mucus on their body that keeps them safe from Anemone venom. They are then able to hide safely within an Anemone's tentacles, and in return for protection, the Anemone receives bits of the Clwonfishes' meals.