The rare reptile species are known as "radiated tortoises" and found only in Madagascar, customs officials said. The one-of-a-kind pattern on their shell case makes them precious for collectors.

The baby reptiles, 15 of which had died, were discovered in a crate carrying sea cucumbers on December 14. The officials added that "particularly unsuitable conditions of transport," was the cause of their death.

Those that have survived have been transported to Tortoise Village in France's southeastern Var region.