Many green anemones on the beach, some submerged in the tide and some exposed to the air.
Overall green color, with pink tipped tentacles. Has bumps on the outer "shell", and opens and closes just as an anemone. Found near ocean in aggregated groups.
Yep, they're in the Atlantic too. Invasive. As per: http://massbay.mit.edu/exoticspecies/exoticmaps/descriptions_intro_2.html
Sea anemones are a group of water-dwelling, predatory animals of the order Actiniaria. They are named for the anemone, a terrestrial flower. Sea anemones are classified in the phylum Cnidaria, class Anthozoa, subclass Hexacorallia. Anthozoa often have large polyps that allow for digestion of larger prey and also lack a medusa stage. As cnidarians, sea anemones are related to corals, jellyfish, tube-dwelling anemones, and Hydra.