These colonial marine organisms belong to the phylum cnidaria. You can find them in the ocean attached to either seaweed, shells, rocks or wood piles. They kind of look like a jellyfish, they only grow about 30mm-several cm tall.
Obelia have two different ways of reproducing; Asexually, which is called polyp or Sexually, which is called medusae. Their reproduction strategy is budding. It starts with two medusae, then they produce an egg and a sperm. Then throughout development, they turn into branch like organisms.
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