Noun
Any one of numerous species of echinoderms of the order Echinoidea.
Source: Webster's dictionarysea-urchin
Also popular for some purposes have been sea urchins Ettensohn, C.A. and Sweet, H.C. (2000) Patterning the early sea urchin embryo. Source: Internet
Spermatozoa activation main Acrosome reaction on a sea urchin cell Approaching the egg cell is a rather complex, multistep process of chemotaxis guided by different chemical substances/stimuli on individual levels of phylogeny. Source: Internet
Jane toast with avocado, sesame seeds, and sea urchin aioli. Source: Internet
Husband cannot reconcile with sea urchin roe, so I ate his share. Source: Internet
Ingredients are mostly accessible, although Richards does include some dishes with oysters, quail’s eggs, and sea urchin, which might make things pricey. Source: Internet
It's sea urchin and butter smeared on a soft, crispy ficelle, the essence of ocean transformed in a sandwich spread. Source: Internet