1、Those grubby urchins ran to me and asked for candy.
2、flattened disklike sea urchins that live on sandy bottoms.
3、Sea urchins and sea stars are close relatives.
4、Rock lobsters prey on sea urchins, and increased rock lobster densities coincided with significant decreases in urchins.
5、Green sea urchins, chitons, and sea stars cluster in a tidal pool off Alaska's Aleutian Islands. Sea urchins and sea stars are close relatives.
6、The urchins feeding on fresh sea algae produce germens tasting delicious.
7、Bottom-dwelling creatures like mussels, brittle stars and sea urchins have not developed any defenses.
8、Sea urchins are perhaps best known for their armor of spines.
9、Fish pick at the urchins, which feed on bits of algae.
10、"echinoid:an echinoderm of the class Echinoidea, which includes the sand dollars and sea urchins."
11、This, scientists say, shows that sea urchins are closer kin to humans than beetles, flies, crabs, and clams.
12、A group of village urchins noisily followed the litter, the appearance of which stirred the quiet village.
13、They dive and surface and float around on their backs with their little PAWS poking up out of the water, munching sea urchins or thinking about munching sea urchins.
14、He allowed these "enucleated" eggs to be fertilized by sperm from sea urchins of the genus Echinus.
15、Remains of more modern corals, diverse pelecypods, sea urchins and ammonoids characterize the marine strata of the Mesozoic Era.
16、A nontoxic dye highlights water currents surrounding sea urchins off Vancouver Island, British Columbia. These small, spiny echinoderms are found in oceans all over the world.
17、I found a few sea urchins and a star fish, Lettered Olives (my favorite seashells), Florida Augers, Van Hyning's Cockle and even two perfect sand dollar skeletons.
18、Since the disappearance of sea urchins from the waters up the coast of South Florida, many coral reefs there have been smothered by the uncontrolled growth of algae.
19、Feeds during the day, primarily on mollusks, but also takes fishes, as well as other invertebrates such as brittle stars and sea urchins.
20、The less-common commercial fish and many corals that reach the northernmost extent of their range in Hong Kong remain poorly documented, not to mention the myriad of less familiar worms, urchins, starfish, sea pens and the more microscopicplanktonic forms.
21、The finding also suggests that, even though urchins don't have eyes, their visual abilities are similar to those of Marine invertebrates that do have eyes, such as the nautilus and the horseshoe crab.
22、SANTA CRUZ, Calif., Jan. 14 (UPI) — Overfishing of reefs leads to explosions in populations of sea urchins, which destroy coral algae that build tropical reef systems, U.S. researchers say.
23、Making his employees scramble for the money with all the loss of dignity that involves reminds me of the ignorant tourists who used to throw COINS to the urchins in poor countries.
24、Any of numerous radially symmetrical marine invertebrates of the phylum Echinodermata, which includes the starfishes, sea urchins, and sea cucumbers, having an internal calcareous skeleton and often covered with spines.
