<p><strong>Fig. 4.7.</strong>&nbsp;(<strong>B</strong>) Jellyfish, or jelly medusas, are really cnidarians (not fish).</p>

Fig. 4.7. (B) Jellyfish, or jelly medusas, are really cnidarians (not fish).

Image courtesy of Anna Fiolek, National Oceanic and Atmospheric Administration (NOAA)