Hey, have you seen this warning?
https://www.azerbaycan24.com/en/nuclear-shrimp-warning-issued-in-us/
All the versions of it I have seen do NOT speculate about the location of the source of the Ce-137, which most likely is a nuclear power plant (or two).
There are no nuclear power plants in Indonesia. There is, however, a system of currents known as the Indonesian throughflow which could be bringing the waters off the Fukushima Daiichi Nuclear Power Station down to the island nation.
As you may know, the Fukushima accident in 2011 damaged several of the reactors there, and the melted fuel which escaped into the earth (leakage of which has made it into the ocean) contains LOTS of Ce-137.
I read one report which mentioned the isotope can be used to irradiate food for sterilization purposes, but that is done with sealed sources which are not likely to contaminate the food.
Whatever the case, keep all this in mind when your country starts to build dozens (hundreds?) of "advanced" reactors willy-nilly all over the place to power the data centers which will enable the firing of most workers in nearly all occupations around the world. There might be more radioactive food in our future.
