0
Sea Urchins
There are over 900 sea urchin species and they can be found in almost all parts of any ocean. They are often characterized by protruding spines from their test.
260 Questions
What are some animals that live in the Santa Cruz Sea Cave?
The Painted Cave located on the Channel Island of Santa Cruz is home to many marine animals. Sea anemones and sponges normally brightly colored near the entrance to the cave will lose their color in the dark sunless reaches. Sea Lions also make their home on exposed ledges in the cave most of the year.
Is it hard to take care of sea urchin?
Soooo easy! Very peaceful animals that make fantastic pets. Everyone should have a seahorse!
How many eggs do sea urchins lay?
Yes, In fact, A female sea urchin can lay up to 500 million eggs in her lifetime. These eggs are released out into the sea. A male sea urchin releases billions of sperm cells. When the egg and sperm meet, the baby sea urchin floats around until it matures.
How many types of sea urchins?
- Sea star or starfish (Asteroidea)
- Brittle stars, basket stars, serpent stars (Ophiuroidea)
- Sea urchins, heart urchins and sanddollars (Echinoidea)
- Holothurians or sea cucumbers (Holothuroidea)
- Feather stars and sea lilies (Crinoidea).
Do sea urchins throw their spines?
So that the sea urchin can protect itself from is enemies, it also has venomous spines. They also use their spines to kill other sea ceatures, so they can eat them.
Which phylum do starfish and sea urchins belong to?
Sea stars are in the phylum Echinodermata and the subphylum Asterozoa.
Do sea urchins live in warm water?
No, atually they live in massive groups, searching for kelp and other sea grasses to munch on. A large mass of urchins can clear massive kelp forests in a short amount of time. Most urchin groups live in shallows, but some species prefer deeper waters.
Sea Urchins spawn, much like fish, directly into the sea. First the male with release his sperm into the water and then the female will release her eggs. This type of mating is very common among water dwelling animals.
because its their food, they usually eat shellfish and fish
There is not an exact colour but, black, red, purple, and green are some of the most common colours you will see on a sea urchins.
Is a sea urchin a bottom feeder?
Yes, sea urchins are considered bottom feeders. They primarily graze on algae and detritus found on the ocean floor, using their specialized mouthparts to scrape food from rocks and other surfaces. Their feeding behavior plays a vital role in maintaining the health of marine ecosystems by controlling algae growth.
What is the genus species name of a sea urchin?
Based on: http://en.wikipedia.org/wiki/Sea_urchin
... Sea Urchins are small, spiny sea creatures of the class Echinoidea found in oceans all over the world. ...
... Sea urchins are members of the phylum Echinodermata, which also includes starfish, sea cucumbers, brittle stars, and crinoids. Like other echinoderms they have fivefold symmetry (called pentamerism) and move by means of hundreds of tiny, transparent, adhesive "tube feet". ...
... Within the echinoderms, sea urchins are classified as echinoids (class Echinoidea). Specifically, the term "sea urchin" refers to the "regular echinoids," which are symmetrical and globular. The ordinary phrase "sea urchin" actually includes several different taxonomic groups: the Echinoida and the Cidaroida or "slate-pencil urchins", which have very thick, blunt spines (see image at right), and others (see taxonomic box on the right). Besides sea urchins, the Echinoidea also includes three groups of "irregular" echinoids: flattened sand dollars, sea biscuits, and heart urchins. ...
hope it helps!
Are there any sea urchins that are poisonous to eat?
i have tried one. when it's in sushi it's called uni.
The gonads of the purple sea urchins of the eastern pacific rim, Strongylocentrotus purpuratus, are quite edible and very tasty. The only problem is, they're a lot smaller than S. fransiscanus, the black sea urchin (the one you usually see in sushi bars). Smaller means lower yield and harder to prepare or eat. But yes -- you can eat them.
Do sea urchins have an endoskeleton?
No. echinoderms have no exoskeleton.
Related Information:
Echinoderms are deuterostomes, a group belonging to the Phylum, Chordata but separate from the vertebrates, also of this phylum. While there is a close relationship between the echinoderms and the vertebrates, echinoderms are endoskeletal invertebrates.
What are some different types of sea urchins?
There are over 700 species of Sea urchins. Some examples would be the pincushion sea urchin, the popular and common longspine urchin, the Blue Tuxedo urchin, the shortspine urchin and the pencil urchin. They usually differ in color, location most common and overall look or how long their spines are.
