Jennifer Viegas over at Born Animal has a story about virgin animal births (called Parthenogensis) and a video of sharks mating! There was a report recently of a blacktip reef shark female giving birth with divine intervention. Millions of Elasmobranchs flocked to the site and showered the new mom with gifts of frankincense, myrrh and offerings of their first-borns.
"The female can go about her usual business for years on end and one morning she just wakes up and finds herself pregnant"
This is common in some organisms such as rotifers (they only produce tiny, useless males in the absolute worst case scenario). In other animals the male is just reduced to some pointless sperm-providing sucker that can’t even feed for itself or live without being supported entirely by the female. Deep sea Angler-Fish and Bone-Devouring Zombie Worms (Osedax) are strange examples of species that have parasitic males. -KZ