Snow96
4
If designed correctly, once they put the pieces together, it should stay together. But being printed on hundreds of printers that could be off a few mm here and a few mm there hard to say. The center circle only goes halfway down. The rest will be filled with sand to keep it on the bottom of the ocean.
nearly a thousand pices with sand in them, it will probably move around the bottom a little (until the coral establishes itself and adds more weight), but it shouldn’t come apart (based on my experience of makig multi part peices that have to interlock together).