Helmet jellyfish reach a body size of up to 30 cm (12 in). The average wet weight of the jellyfish is 540 grams. Overall, helmet jellyfish have a uniform size. They consist 90% of water, the rest being tissue and gelatinous mass, … Se mere

The helmet jelly is found in nearly every ocean of the world, as well as in the Norwegian fjords and in the Mediterranean Sea. … Se mere

The jellyfish is found in depths up to 2700 meters and is adapted to its dark environment. Not only have they become adapted and more … Se mere

Periphylla periphylla represents an exception, very rarely found in the phylum Cnidaria: the medusae do not go through a polyp stage, thus … Se mere