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Structure
Interesting Questions, Facts and Information
- There are a total of 10 general entries.
Special Topics
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 Interesting Questions, Facts, and Information
 Crustaceans
Both of these. Shrimp have lamellar gills (meaning thin and plate-like), whereas prawns have branching gills. The simplest way to visually distinguish a shrimp from a prawn, though, is by looking at the second abdominal segment. In shrimps, the second segment overlaps both the first and third segments. The second abdominal segment of a prawn overlaps only the third segment.
10. Clawed lobsters belong to the order of decapods, meaning ten feet. When just looking at a lobster, you might think you count only eight feet. This is because their front legs have evolved into the claws, but they are still considered feet and not hands.
They grow a new shell. There are different groups of crustaceans that are officially classed as lobsters, but people usually mean the family of clawed lobsters when they say simply 'lobster'. Lobsters continue to grow in size for as long they live, which many experts believe could be indefinitely, if they are not captured, attacked in the wild or become diseased. As lobsters grow, they molt; they discard their old shell, eat it, and grow a new one.
No. The majority of crustaceans are either marine (sea-dwelling) or freshwater creatures, but a few of them have adapted to living partly on land. Terrestrial crabs and hermit crabs are just a couple of examples.
carcinology. From thefreedictionary.com: "the department of Zoology which treats of the Crustacea (lobsters, crabs, etc.)
Other names for the same study include crustalogy, crustaceology, and malacostracology.
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