If we don't act now, we are going to lose our sharks - and our oceans - our life support systems on this planet. Everyone needs to be aware of this situation - and everyone needs to join the fight. We can save our sharks by coming together in a grass roots movement and turning our passion into action. We tend to protect the things we understand, and sharks are largely out of sight, out of mind for us. I hope more people will get in the water - that's a powerful tool to protect them - and everything else in the oceans. When you come virtually face to fin with the "world's most dangerous sharks" you will realize as I have, that sharks aren't the enemies - the only thing we have to fear is ourselves.

The oppression of other animals as food is unquestionably the deadliest practice; globally, more than 65 billion land-based beings are killed to be consumed as food every year, while the water-based other animals killed for food number in the hundreds of billions. The physical and emotional suffering from such horrific treatment experienced by each individual being, multiplied by the billions of individual animals who undergo it, results in a degree of severe distress and pain — every second — that defies comprehension

We have overfished 30% of fish stocks to critical levels. We cut down over 15 billion trees each year. By damming, polluting, and over-extracting rivers and lakes, we've reduced the size of freshwater populations by over 80%.

More people are killed every year by pigs than by sharks, which shows you how good we are at evaluating risk.

We are experiencing an accelerated obliteration of the planet’s life-forms — an estimated 8,760 species die off per year — because, simply put, there are too many people. Most of these extinctions are the direct result of the expanding need for energy, housing, food and other resources. The , , , , , , and are all victims of human overpopulation. Population growth, as E. O. Wilson says, is "the monster on the land." Species are vanishing at a rate of a hundred to a thousand times faster than they did before the arrival of humans. If the current rate of extinction continues, Homo sapiens will be one of the few life-forms left on the planet, its members scrambling violently among themselves for water, food, fossil fuels and perhaps air until they too disappear. Humanity, Wilson says, is leaving the , the age of mammals, and entering the Eremozoic — the era of solitude. As long as the Earth is viewed as the personal property of the human race, a belief embraced by everyone from Christians to Marxists to free-market economists, we are destined to soon inhabit a biological wasteland.

Diving into the ocean, it’s like diving into the history of life on earth, not just over the last 50 or 1,000, but the last million, 10 million, 100 million years, because creatures are there that have been there for several hundred million years, not those same creatures, but their near relatives, like jellyfish; like — well, sharks have been around for 300 million years; horseshoe crabs, creatures that lured me into the ocean as a child in New Jersey, have a history that goes back at least 300 million years; so many forms of life that were found in the ocean long before there were multicellular creatures occupying space on the land.

I am somewhere in Mauritius, for example, at the Odysseo oceanarium where one can see the sharks swimming with other fish. Now to us, it’s a dangerous shark but to the other fish, it’s just another fish. It is dangerous, but not a monster, just a fish. This is an analogy of how serial killers are, they move among us; just another person going about their daily lives.

So far are we from fully appreciating the dire plight of the natural world that it is still regarded as a perfectly normal, acceptable hobby to kill animals for fun. Thirty-five million pheasants are reared and released each year in the UK alone, so that a small number of people can enjoy blasting away at these naïve, semi-tame animals. There are simply too many of us (and soon to be many more) for it to be acceptable to carry on killing animals for amusement. We need to somehow persuade everyone to treat our environment with respect, to teach children growing up that littering, killing, polluting, are just not socially acceptable. How can we do that when the supposedly great and the good slaughter pheasants and grouse just for weekend entertainment?

Sharks are hardy creatures, but they do not thrive on public transportation.

Scientists tell us that up to 140,000 species of plants and animals are disappearing each year due to our of the Earth's ecosystems. This rate of extinction is 100 to 1,000 times faster than before the Industrial Revolution - so fast that scientists have classed this as the event in the planet's history, with the last one having occurred some 66 million years ago.

The Shark Attack File offers us an opportunity to not only, I suppose, help humanity at some level by trying to reduce the opportunities for shark and humans to get together and therefore saving some grief among humans, but equally importantly, it allows us to put it into perspective: shark attacks as a phenomenon are a fairly uncommon event. By contrast, our decimation of sharks and ray populations is going on largely unabated. It gives us a bully pulpit to talk about the real concern of the shark in the scientific world, which is the fate of the sharks.

The next time you dine on sushi -- or sashimi, or swordfish steak, or shrimp cocktail, whatever wildlife you happen to enjoy from the ocean -- think of the real cost. For every pound that goes to market, more than 10 pounds, even 100 pounds, may be thrown away as bycatch. This is the consequence of not knowing that there are limits to what we can take out of the sea.

Each human carnivore is responsible for the death and dismemberment of more than 3,000 animals throughout his or her lifetime. Annually, in the US alone, over 10 billion cows, pigs, chickens, turkeys and other animals live in concentration camps. Within the first year of their pathetic lives, they're sent to killing houses where knife-wielding terrorists slit their throats, drain their blood and dismember their bodies, all too often while the animals are still conscious and awake.

Life isn't binary — and neither is politics. If you are adrift in the ocean, your enemy isn’t just sharks; it’s thirst, hunger, drowning, and despair itself. If you face your predicament assuming the only thing you have to worry about is being eaten by a shark, you might fend off the sharks, but you will also probably die. Indeed, by ignoring other threats, you’d probably make yourself more vulnerable to a shark attack.