• cnidarians

    TITLE: cnidarian: Reproduction and life cycles
    SECTION: Reproduction and life cycles
  • entoprocts

    TITLE: entoproct
  • hydroid

    TITLE: hydroid (hydrozoan)
    ...the medusa by retaining it on the sessile hydroid colony. Colonies of hydroids are typically 5 to 500 mm (0.2 to 20 inches) or more high and are branched; the branches bear the individuals, or zooids (hydroid polyps). Each zooid consists of a tubular body that has two layers separated by a thin, jellylike mesoglea (layer of connective tissue), a terminal mouth, and surrounding circlet(s)...
  • moss animals

    TITLE: moss animal
    TITLE: moss animal: Annotated classification
    SECTION: Annotated classification
    Annotated classification