For the frog eggs, there's a trick that photographers use. My dad actually found the eggs stuck to a stick in a pond, so he picked them up, and put them in a plastic bag with water, and we put the eggs in an aquarium, where we got these pictures. And then, after we got the pictures, we took the eggs back to the pond.
To photograph them, we used a tripod with a special macro adjustment head, and 2 flashes: one from above, and another from the front and to the side, as to not create a glare on the glass.
When I first saw the pictures, I thought it looked like something computer generated...