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
According to the Olympics, the fastest swim style is the front crawl and the fastest event is the 50m freestyle men's. The world record right now for the 50m freestyle is 21 â¦ .28 seconds.ources vary as to how fast a platypus swims. They have been recorded as swimming and diving at a rate of about 12 metres (40 feet) per minute.