Carp is both an important food fish as well as an invasive pest; it can live for months in very muddy, low oxygen or iced water using a different metabolic channel, often able to outlive and outlast the native fish. It can grow to reasonably large sizes and is usually a predator of native fish and other smaller aquatic creatures as well as eat other available food. Rubidium is a room temperature, liquid state alkali metal that also boasts the longest living isotope of 87 Rb that has a half-life that is longer than the life of the known universe (49 billion years!). They are a match as both are useful in their way but also potentially dangerous and destructive.
The Wale Shark is a filter feeder shark that has grown to massive sizes. Like other large animals it’s size requires it to be close to constantly eating food.
Strontium is often absorbed in animals and plants like Calcium and it can be substitute it in some cases. When radioactive material has been released isotopes of Strontium is often one of the biggest issues for cleanup and containment. In the past it and isotopes of Iodine are the hardest to get rid of and the most concerning as they are readily absorbed by the body from eating contaminated foods. Here they do untold damage, causing cancer and deformities.
A Wale Shark then matches with Strontium as a filter feeder, it eats a little bit of radioactive material, if this increases we are likely to no longer see them.