You need a fairly heavy grade of shell to take the back part off......very few shells are of this grade. The processes are fairly easy you can either file it off by hand. You can sand it off with an electric sander (remember to wear a dust mask). Or if you have a electric wet wheel you can grind it off using that. Some people soak them in battery acid, but only do so for 1/2 an hour other wise the whole shell will dissolve.
Mostly owing to the minerals in the waters around New Zealand also the Paua's diet helps as well.
The "Big Paua" is mostly found in deeper waters, but for the best and largest shells, the Chatham Islands hold that record hands down. However the statue of the "Big Paua" is in Riverton at the base of the South Island.
There is 3 variations of Paua in New Zealand. The Standard Yellow or black foot, then a slightly smaller Silver Paua, and down in size again to what is called a Virgin Paua (or sometimes called Baby Paua.
Both the Paua and the Greenstone (Pounamu) help add mana (spirit) to any carving they inhabit plus giving it a indefinite link to New Zealand
They vary in price from a few cents each to a few dollars, depends on where you shop.
Paua has mostly only 2 "enemies" one being obviously human and the other is a star fish. The star fish has a unique way of attacking the Paua, it attaches its self to the outer part of the shell and starts to bite a hole through the shells surface. The paua decides it's being attacked and releases its self from its rock to try and relocate.......that is when the star fish grabs the Paua and can turn it over for consumption.
Some paua may have lost their shells due to injury, predation, or environmental factors. They can still survive without a shell, as long as they have enough protection and the ability to regenerate a new shell over time.
Paua Fritters are a combination of flour, egg and minced Paua.
There are only 3 species that can be directly called Paua. Silver Paua, Virgin Paua and normal Paua (though they can all be split into sub species).
e whai ahau he Paua ' literally means 'I have a Paua!
When a Paua dies the animal releases its grip from what ever rock it was clinging from and floats freely, the meat part then is often consumed by crabs or starfish and the empty shell more often than not washes up on the beach.
Your average adult Paua can possible nibble through about 1kg of Paua in a day, of course the larger the Paua the healthier the appetite.