What is the sea hedgehog?

Sea hedgehogs are spherical sea animals covered with the backbone of the Echinoderm family. On average, they have a diameter of 2 to 4 inches (about 5 to 10 cm) and come in a wide range of colors, including black, red and white. The sea hedgehog moves around the ocean bottom using the feet of pipes with suction cups at the end, and many varieties also have a movable spine that can be used to help with locomotion. These animals generally require salt water survival and are widely distributed to world oceans. In fact, the word Urchin means "like a hedgehog" in Greek and this name got due to a similar coating of defensive spikes.

Most of the sea hedgehog varieties are night creatures. They often dig into the slots and spend most of the daylight hidden. At night they come and feed, usually eat algae and other sea plants. It is assumed that these animals serve an important ecological purpose by helping to maintain balance in the lashles, but if there are not enough predators around, the determination may exert a lot of pressure on the seafood population.When this happens, they can sometimes leave long sections of the wasteland on the bottom of the ocean.

Sea hedgehogs are reproduced by releasing sperm and eggs into the water. These particles are then transmitted by current and interconnection, which eventually leads to fertilization of the egg. The sea hedgehog can go through several larval phases, as it matures, but the exact sequence for development differs a bit between different types of urchins. Friction generally happens annually in the spring.

6 It may be one of the most common sea animals that causes human injury, and sometimes surgery may take to remove the spikes of similar needles from the injured part of the body. Some urchin species have poisonous bands and toxin can cause a wide range of symptoms, including pain, inflammation, dyspnoea and vomiting.

Despite their defensive mechanism, sea hedgehogs have numerous natural enemies who have found ways to bypass protection. Human beings are probably the mostThe seashore predators, because the determinations are a common component in many foods, especially in Japanese cuisine. Sea otters and starfish often prey to Uchin and other animals such as seagulls, it is known to eat them when this opportunity is present.