Are sea animals just born with them or how does it happen?
2006-09-18 10:19:31 · 9 answers · asked by if i only knew 3 in Science & Mathematics ➔ Biology
Seashells are calcified mineral secreted from a body part called the "mantle", generally found in primitive animals such as clams, oysters, and snails.
If you look closely, you will see rings on some of the cooler types of sea shells. This are from layers of secreted mineral that acccumulate on top of one another over growth cycles.
2006-09-18 12:20:28 · answer #1 · answered by Raj L 3 · 1⤊ 0⤋
How Are Seashells Formed
2016-09-29 10:21:25 · answer #2 · answered by ? 4 · 0⤊ 0⤋
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RE:
How are seashells formed?
Are sea animals just born with them or how does it happen?
2015-08-16 16:10:10 · answer #3 · answered by Anonymous · 0⤊ 0⤋
How Are Sea Shells Formed
2016-12-28 07:09:08 · answer #4 · answered by Anonymous · 0⤊ 0⤋
They are born with them (with the exception of hermit crabs) and then the shells grow as the animals grows.
How this happens varies based on the type of organism.
Mollusks (clams, mussels, oysters, snails, chambered nautilus etc) secrete them with their mantle and you can see growth rings or chambers.
Crustaceans (shrimp, lobsters, crabs) and other marine arthropods, shed their old chitonous exoskeletons and grow entire new ones underneath.
2006-09-18 10:32:48 · answer #5 · answered by phd4jc 3 · 1⤊ 0⤋
you and i have internal skeletons, also called "endoskeletons" (endo means inside) and our skeletons grow throughout our lives, don't they...
insects and some sea animals have external skeletons, or "exoskeletons", which their bodies control and make to grow on the outside. because they are hard and not stretchy, they have to be "shed" and then the animal makes a new one, which is soft at first but hardens over a few hours. if you look carefully in your yard, you might find some shedded "exoskeltons" from spiders, grasshoppers, etc.
hope this helps, or at least sparks some interest. science ROCKS
2006-09-18 10:32:23 · answer #6 · answered by georgia 3 · 1⤊ 1⤋
their bodies form them after their born
2006-09-18 10:20:40 · answer #7 · answered by nicole 6 · 1⤊ 0⤋
Nope, the shell is secreted by the animal. If you look closely, you can see growth rings.
2006-09-18 10:22:20 · answer #8 · answered by just browsin 6 · 1⤊ 0⤋
Oh!Interesting question!Well,the sand is formed and when it washes up onto the sea,it becomes more and more harder and more fragile.And when the seaweed comes up,it kinda like dyes it!So that was an interesting question,and I gave you an interesting awnser!
2006-09-18 10:23:10 · answer #9 · answered by Anonymous · 1⤊ 3⤋