My small backyard pond contains 5 turtles and 4 Koi/goldfish.
The largest turtle is a female and is about 8 years old. She dropped 4 eggs in the pond and 2 broke.
These are the 2 intact ones.
With no sand to bury them in..they will not develop. Last year, the same happened and I tried covering them with sand in the sun..didn't work.
I think the only way to hatch them is with an incubator and I'm not that interested in doing that.