### covering | shell:

Ammonite shell
* Most ammonite shells are coiled, and all contain a series of linked chambers.
* are among the most common fossils.
* contain various minerals, some of which exist as isotopes.

Bony shell
* cover with layers.
* provide protection.

Clam shell
* add many layers to their shell each year in response to environmental changes.
* are abundant on beaches near quiet bays and can be found along nearly all open coast.
* come in variety of pastel colors.

Clamshell
* ClamShells produce a soap with a completely smooth top - no indentations of any kind.
* are shells.

Cone shell
* Some cone shells contain a mix of toxins that can cause pain, paralysis, and collapse.
* are marine snails and are found in reef environments throughout the world.

Cowrie shell
* are a special part of many native African rituals
  - also randomly attached to the fibers
* indicate wealth and symbolize women.

Different shell
* have different geometries and different textures.
* hold different numbers of electrons.

### covering | shell:

Egg shell
* Most egg shell is white, but a rarer form is green.
* add calcium, plus a few trace minerals.
* are a good source of calcium
  - also useful in cleaning glass bottles
  - located in trash
  - made of calcium
  - porous
  - sharp and can cause lacerations to the lining of the stomach if swallowed
* can donate calcium to tomato transplants.
* come off of hard cooked eggs more easily if briefly rinsed in cold water, first.
* contain calcium carbonate.
* have calcium carbonate.
* provide natural protection from contamination.

Hard outer shell
* serve functions
  - protective functions
* serve vital functions

Hard shell
* Most hard shells are made of silica.
* Some hard shells have legs
  - protect mollusks
* are located in turtles
  - useful protection, at least from weak-jawed creatures
* develop a nice, mottled green color and can grow quite large and heavy.

Mg capsule shell
* contain iron oxide
* contain yellow iron oxide

Outer shell
* Most outer shells serve protective functions
  - vital protective functions
* Some outer shells act like mirrors
  - protect larvae
* can hold more electrons but are considered stable when they contain eight electrons.
* have higher energy levels and are characterized as being lower in stability.
* serve vital functions

Razor shell
* have a fragile shell , with open ends.
* live in the sand.
+ Razor shell, Description: Bivalves
  * Razor shells have a fragile shell, with open ends. The periostracum is olive-green. The inner surface is white with a purple tinge and the foot is creamy white with brown lines.

Sea shell
* Many sea shells are important for the balance of life on the coral reefs.
* are in the rock.
* are located in beachs
  - oceans

Secure shell
* refers to software that employs a secure protocol when connecting to remote servers.
* set of network connectivity tools used to access remote machines securely.

Shrapnel
* are shells.
* is an anti-personnel round used at long ranges.
* particular design for artillery shells that is no longer in general use.
* small publisher that caters to independent developers.

Snail shell
* Some snail shells contain crabs
  - hermit crabs
* are spiral, flowers are symmetric.
* coils in one plane.
* have spiral symmetry, and delphiniums have five equally spaced petals.
* is made of calcium carbonate and keeps growing as long as the snail grows.

Turtle shell
* Most turtle shells provide protection.
* are hard and bony.