Nigerostration (Phenomenon) (Gallery).

You will find on this page some details of the various variations of known Nigerisations of this Phenomenon to be discovered here (GALLERIES).

The "Phenomenon" affecting "Normal" Cypraeas to transform them into "Rostrated Nigers" (N/R or Nigerostrated), has been present for centuries in New Caledonia,
but because of the very significant mining pollution of the coasts of the Great South which has taken place for several decades, it cannot last any longer, and has now disappeared for a few years.