noun
- A jellyfish or other gelatinous marine animal of the phylum Cnidaria.
Usage: scientific or formal; plural: acalephes or acalephs
Examples
- The acaleph drifted through the ocean currents with its tentacles trailing behind.
- Marine biologists studied the acaleph's bioluminescent properties in the deep sea.
- An acaleph can deliver a painful sting to swimmers who brush against it.
- The aquarium's collection included several species of acaleph from different ocean depths.