sea walnut


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sea walnut

n.
Any of several bioluminescent walnut-shaped ctenophores of the genus Mnemiopsis, especially M. leidyi.
References in periodicals archive ?
A prominent example is the American comb jellyfish Mnemiopsis leidyi, also called sea walnut.
Circassian walnut comes from the Caucasus at the Black Sea, which explains another name for European walnut - Black Sea walnut. Its markings tend to be darker and more wild than other European walnuts.
When the American comb jelly Mnemiopsis leidyi, also known as sea walnut, conquered the Black Sea as a new habitat 35 years ago, the ecosystem there changed sustainably.