(Grind TV) One of the more remarkable events in nature is the spawning and incubation process of the Mediterranean cardinal fish whereby the female transfers her eggs to the mouth of the male in the blink of an eye.
The male then broods up to 90 eggs in its mouth for 30 days, during which time it doesn't eat.
Photographing the egg transfer is nearly impossible, since it can occur in less than two seconds. So it is understandable that underwater photographer Borut Furlan had no idea what he had shot in a semi-dark cave of the Adriatic Sea off Croatia—until he reviewed the photo on the camera's screen.
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