THE SHARKS

Shark bodies are hugely varied, but are largely based on a common body plan with a cartilaginous skeleton.  

Bull sharks can venture into murky rivers, where eyesight becomes redundant. As with many fish, a row of pressure-sensitive organs along their sides detect movements in the water. This LATERAL LINE then sends these messages to the brain. 

Spyhopping allows great white sharks to peek above the water for signs of a potential meal. Group of seabirds could indicate the presence of a carcass or other animals feeding as well as where pinnipeds (seas and sealions) may be hauled out on the shore.

The number of young produced varies between species, as does the size of the new pups!