They included cold-blooded organisms that ranged in average lifespan from 11.6 days for the copepod (small crustaceans) Arcartia tonsa to 74 years for the pearl mussel (Margaritifera margaritifera).

Pearl mussel disease because it went through a painful process, become famous businessman also experienced a bumpy.

The pearl was mellow, full and great, it is a priceless treasure for human, but a accident with pain for died freshwater mussel, maker of the pearl.