Egg-Laying Sharks. Of the approximately 400 species of sharks, about 40% lay eggs. This is called oviparity. When the eggs are laid, they are in a protective egg case (which sometimes washes up on the beach and is commonly called a mermaid's purse).
what s the truth i am asking this b c there seems to be posts on here that say y sperm swim faster which is what we all prob have heard for the longest time but there have been some recent posts on here that state newer studies now say y sperm aren t any faster than x and they can both swim just as fast so im just wanting to know which one is true if anyone really knows thanks
This Site Might Help You. RE: How fast are killer whales in water? How do they compare to similar sized predators like great white sharks in swimming speed, and other types of dolphins? Also is it easier to swim faster if you&#39;re nearer the surface?Swimming near the surface does not make the killer whale faster. Killer whales swim near the surface for hunting purposes. Source(s): http://en.wikipedia.org/wiki/Orca http://thedolphinplace.com/QandA.html#9 http://www.elasmo-research.org/education...