Rubber Duck
Constructed from vulcanised rubber or PVC, the modern rubber duck demonstrates remarkable resistance to environmental degradation. Specimens recovered from the aforementioned 1992 spill remained intact after fifteen years of oceanic exposure, their structural integrity largely uncompromised.
The rubber duck's simple construction, lacking moving parts or complex mechanisms, ensures a lifespan measured in decades under normal household conditions. This engineered permanence stands as a testament to human industrial achievement.
Shark
The shark's biological durability manifests through continuous regeneration. Teeth are replaced every two weeks throughout the creature's lifespan, whilst their cartilaginous skeleton provides flexibility that bone cannot match. The whale shark, largest of the species, may live for over one hundred years.
However, sharks prove vulnerable to environmental pressures including pollution, fishing, and habitat destruction, with one hundred million specimens killed annually through human activity.