In spring 2012 three surfers along Florida's Mid-Atlantic coast are savaged within 24 hours – but is a rogue shark really to blame?
After years without shark problems, the densely populated coastline between LA and San Diego has come under attack. Experts race to find out why.
Seabirds rush to feed their hungry chicks while avoiding skuas, predatory birds with a taste for young puffins.
Each year the Pantanal switches from grassland to swamp and back. Jaguar, giant otters, fish and caiman each take turns in the ascendant.
Beneath the calm waters of North Carolina and Virginia, danger lurks. Is there a link between two surges in attacks with a decade between them?