What are spicules?

Answer

Spicules are small, needle like particles from sponges or corals. When snorkeling you can stir up spicules on the bottom of the sea, which get on your sin and cause irritation.
Q&A Related to "What are spicules?"
Spicules are spiny structures of sponges, used to harden their outside and deter predators, making them harder to chew and digest. They can be made of a range of substances including
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"Bone spicule" is a term found in osteology, in dental surgery and also in ophthalmology. It is most commonly used to define the bony matrix in the formation of new bone
http://www.ehow.com/facts_7505677_bone-spicule.htm...
Spicules:1:small pointed structure serving as a skeletal element in various marine and freshwater
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(spĭk'yūl) also spic·u·la ( -yə-lə ) n. , pl. , -ules , also -u·lae ( -yə-lē ). A small needlelike structure or part, such as one
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2 Additional Answers
Ask.com Answer for: what are spicules
spic·ule
[spik-yool]
NOUN
1.
a small or minute, slender, sharp-pointed body or part; a small, needlelike crystal, process, or the like.
2.
Zoology one of the small, hard, calcareous or siliceous bodies that serve as the skeletal elements of various marine and freshwater invertebrates.
3.
Astronomy a jet of gas several hundred miles in diameter rising from the sun's surface to heights of 3000 to 6000 miles (4800 to 9600 km).
Source: Dictionary.com
Spicules are tiny spiky structures that are categorized by size and are found in the legs of frogs. They are used for structure and are categorized in four types such as Monaxon, traxon, tetraxon and polyaxon. You can find more information here: http://en.wikipedia.org/wiki/Spicule
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