KnowraHydrozoaLinked fromLinked fromThe 8 pages that link to Hydrozoa, each with the reason it gives.All 8Broader topic 1Related 1Narrower topic 4Compared with 2ScyphozoaCompared with: Hydrozoans often emphasize the polyp stage, unlike the prominent medusae typical of scyphozoans.Box jellyfishCompared with: Hydrozoans share the cnidarian ancestry but differ in body forms and life cycles.