What are Puka Shells?
103706
Puka shells are pieces of a Cone Snail shell. Puka is the Hawaiian word for "hole" and refers to the naturally occurring hole in the middle of the shell fragment.\n\nAs the name implies, the shell of the Cone Snail is cone-shaped, being closed at the larger end. While the abandoned shell is tossed in the surf and coral rubble, the pointed end is ground into sand. The "puka" is formed when the minor apex of the large end is eroded by the same forces that wears off the point.\n\nNecklaces, bracelets and anklets are a perfect use of the "shells" because they already have a hole for stringing. Puka jewelry first became popular in Hawaii though the Cone Snail is found throughout the Indo-Pacific ocean.\n\nPuka shell jewelry used to be fairly expensive due to the labor involved in collecting enough naturally formed "shells" for a suitable string. Currently the Cone Snail shells are often harvested and other types of shells may also be used for faux puka jewelry.\n\nAuthenticity may be determined by simple observation. An overtly glossy patina indicates the shells have been tumble polished. If the edges are chipped, the shells were harvested and manually broken into shape. If the "puka" is perfectly circular, then the hole was assuredly drilled.
468060
crao_craz is correct.  \n\nOne of the main differences in the two groups is in the form of the pen/cuttlebone.\n\nCephalopod groups differ in the level to which they have retained or lost the shell ancestral to their mollusc lineage.\n\nThe extinct ammonites had a large, robust shell that protected their body and also provided ballast and buoyancy for deep diving.\n\nThe modern nautilus has a shell, but it is not as robust as the ammonite shells were.\n\nAnother extinct group, the belemnites, had an internal shell, used primarily for buoyancy issues.  It looked almost like a cigar encasing the rear portion of their anatomy.\n\nCuttlefish also have the remnant of an internal shell.  It's essentially a turtle-like shield of bone that sits on the back of the animal.  It is porous and can trap gases, useful as ballast.  They used to use this cuttlebone for a number of purposes, including maintaining/sharpening the beaks of pet birds.  You can still buy cuttlebones for this purpose, and they're still in the cuttlebone shape, but are no longer made from actual cuttlefish bone.\n\nIn squids, the shell is reduced to nothing but a pen.  This is a sheet of stiffening cartilage-like material in the mantle that provides support and structure to the squid's body.  In most species it's transparent, and about the thickness and consistency of the plastic they use to make blister packs of batteries.\n\nIn octopus, the pen is gone completely, allowing them to squeeze through cracks and crevices as long as they can fit their eyeballs and beaks through.
442309
its a uvala!!! \ni have two of them!!!
967659
Don't know about kula shaker does that contain Coconut?\n But I liked OMG - they were good.
887366
In my country, they are called "sambaqui" Sambaqui ( tupi language tamba'kï; literally "mound of shells").\n\nThey are human deposits of organic, limy materials, piled up to the long one of the time and suffering the action from weather, that it finishes for promoting a chemical fossilization, therefore deformed rain the structures of the clams and them embedded bones, spreading out calcium in all the structure and petrifying the there existing debris and skeletons.\n\nSilbury Hill, part of the complex of Neolithic monuments around Avebury in Wiltshire (which includes the West Kennet long barrow), is the tallest prehistoric man-made mound in Europe and one of the world's largest. On a base covering over 2 hectares (5 acres), it rises 39.6m (130ft) high. It is a display of immense technical skill and prolonged control over labour and resources. Archaeologists calculate that Silbury Hill was built about 4600 years ago and that it took 18 million man-hours to dump and shape 248,000 cubic metres (8.75 million cu ft) of earth on top of a natural hill. Every man, woman and child in Britain today could together build such a mound if they each contributed one bucketful of earth.
569073
none.  They are mollusks.  They do have those hard little beaks, but those are not bones any more than a bird's beak is a bone.
305921
Hoola Hoop Competitions, Musical Beach Towels, Hot Coconut (like hot potato)
10628
Yes, I think they are called an Arunca or something similar. Eggs were pastel green. No different in taste, bought them for Easter, and my Grandbabies loved them for breakfast that morning.
164159
Kiwi. \n\nNot just a fruit!
145144
The shell covering an egg is porous !!.It allows Oxygen to enter into the egg and CO2 to move out of the egg!
881260
I guess its because they eat different things- shells are essentially made up of certain things that the animal eats. Also, I guess from an evolutionary point of view, an animal ends up with either hard or soft shells based on the environment within which they live. They would need a hard shell if they were living in difficult surroundings where damage would be easily possible. So its more complex than you'd think! Good luck!
434046
Yahoo images will show you. type (African Coconut Crab)
643820
It's a Gastropod. A kind of sea snail.
649819
The popular linux shells are:\nbash - This is the most popular one\nKorn and its free version pdksh - This is for heave scripting\ntcsh - The C shell
94574
I have some spoiled easter eggs from last year \nand coconuts ;-)
730526
Flax, Germ and .....(husk?...shell) ..... lol ....sorry
588408
http://www.flavakicks.com\n\n\nthese squares aint knowin bout them orange & brown BAPEs..\nsd padre throwback colors,mayne..