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
Best Answer: Squid are among the fastest invertebrates on earth speeding through the water at up to 40 km/h (24 mph). Very odd when compared to other members of the phylum Mollusca like the snail, slug, oyster, etc. When escaping predators, some squid can even jump 3m (about 12ft) out of the water and glide like a flying fish.