Our membership of the EU is a huge subject, infinitely complex and potentially impacting every aspect of life. The environment is just one element, and neither I - nor any of the organisations I spoke to - believe in telling anyone how to vote. I will base my decision on what's important to me, I believe you should do the same.
There's no simple answer to the philosophical and perhaps even moral question of whether in removing risk we also remove meaning from our brief, potential-filled time on this planet. I don't share my habitat with crocodiles or elephants or tigers, or even boar. But I do know that the eye of that reef shark will be etched forever in my mind, and that I can't bear the thought of a world where no creature could ever make me afraid.