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| Name | Sea Urchin Facts: 18 Facts about Sea Urchins |
| Video Uploader | Video From Stand Out Facts |
| Upload Date | This Video Uploaded At 22-06-2014 11:34:32 |
| Video Discription | Here are 18 facts about Sea Urchins to help gain a better understanding of these incredible creatures. They are a fascinating species far different from any other species we know, and here we delve into the wonder of these wonderful creatures. Synopsis There are around 200 species of sea urchins that are found across oceans around the world Sea urchins are found in warmer waters on ocean floors close to coral reefs They are a threatened species due to overfishing and pollution They range in size from between 1.2 to 3.9 inches in diameter. They have globe like shape which is covered in long spines and their bodies have a radial symmetry. They are protected by a shell formed of bony plates providing protection for the softer inner organs. They vary in colour depending in the species of the sea urchin. However the majority are black, brown, purple, red or green in color. They have five rows of paired feet on the underside of their body. These feet have suckers in them which means they can grip the ocean floor. Amongst the spines on their bodies are claw like structures which are known as pedicellariae that are used for protection against predators and also to collect food. There are species of sea urchin that also have spikes that are filled with venom They have a unique type of mouth called "Aristotle's lantern". The mouth has five sharp teeth which they use to drill holes in rocks They are omnivores by nature consuming both animals and plant life such as algae sea weed plankton and Other orgainc mattet The main predators of sea urchins are humans sunflower stars crabs fish birds and Sea urchins mate in the spring time and reproduce by releasing eggs and sperm cells in to the water in a process called external fertilization. the Fertilized egg will then go through a larval stage before it becomes a grown adult. Whilst the sea urchin is in its larval stage It will swim with other types of tiny creatures as part of zooplankton Sea urchins live up to 30 years. In fact the red sea urchin lives up to 200 years making it the longest living creature Sea urchins are not aggressive creatures however if they are touched most sea urchins will try to defend themselves using their spines and some species have spines that can pierce a divers suit. Some species like thr purple sea urchin, have an another defense mechanism called thepedicellarines which are tiny, jaw-like structures which clasp onto a diver's skin and inject a powerful poison. They are nestled down between re spines and are difficult to come into contact with unless the diver impales them self on it |
| Category | People & Blogs |
| Tags | Sea Urchin (Animal) | Sea (Geographical Feature Category) | sea facts | facts about the sea | sea urchin facts | facts about sea urchins | sea urchin facts for kids | facts about sea urchins for kids | Fact (Quotation Subject) |
