For a naturalist , observing animals in the wild is key to learning about species . You can see this by looking at how many times you have seen an animal on TV or read about it in books and magazines. Crittercams record hours of footage that can be retrieved later . The cameras have captured whale calves nursing and a shark chasing a seal .
For a naturalist , observing animals in the wild is key to learning about species . Greg Marshall pioneered the use of `` Crittercams '' mounted on animals . Crittercams record hours of footage that can be retrieved later . The cameras have captured whale calves nursing and a shark chasing a seal .