The island, home to a major fur seal population, is like a castle under siege -- surrounded by hungry sharks just waiting for dinner to venture out into the water.
Any seal that does can expect death from just about any direction, because these sharks can leap 10 feet in the air for a quick morsel.
Amazing Shark Photos
"If I can take an image that shows the incredible life-and-death struggle that takes place, then I feel my imagery has done the dramatic battle justice," he told AOL News via e-mail.
And as hard as it might be to believe, that struggle isn't always as one-sided as it may seem. Just take a look at the image above, which shows a seal balancing on a shark's tooth as it leaps for its life. And Fallows has many more stunning examples on his website.
Fallows admits to rooting for the seal in these situations.
"Even after witnessing more than 6,000 events, I still am a bit of a softy," he says. "I certainly respect the fact that the sharks must eat, but it is never nice to see animals die."
But like any good tale from the sea, the stories of the ones that got away are just as good as the fish he's mounted in his photo frames.
In one case, "we got to a predatory event just too late as a massive 14-foot shark flew out of the water with a seal balancing on its snout 10 feet clear of the water," he writes.
In another, he witnessed a feeding frenzy where a shark bit another shark in the head so hard that it left a few teeth embedded in its skin.
"Believe it or not, the bitten shark kept on feeding as though nothing had happened," he says. But instead of trying to photograph the scene, Fallows tried for a souvenir -- and reached for one of the teeth.
He missed the tooth and the photo.
"I had a 10-foot great white shark get stuck in a one-man cage with me for over a minute," he said. "Not fun!"
Most of the time, however, it seems like plenty of fun. Fallows, who has worked with the BBC, National Geographic and the Discovery Channel, owns and operates Apex Shark Adventures with his wife, Monique, bringing tourists out in the open water.
He's also written four scientific papers and one book on the sharks.
For him, it seems like every week is Shark Week.