オワンクラゲ
"Aequorea victoria" typically feed on soft-bodied organisms, but the diet may also include some crustacean zooplankton such as copepods, crab zoëals, barnacle nauplii &amp; other larval planktonic organisms. Gelatinous organisms consumed include ctenophores, appendicularians and other hydromedusae, including rarely other "Aequorea victoria" if conditions are appropriate. Prey is ensnared in long tentacles containing nematocysts, and ingested with a highly contractile mouth that can expand to consume organisms half the medusae's size. Due to their voracious nature, "Aequorea victoria" density can be inversely correlated to zooplankton density, indicating a competitive presence in shared environments.