My theory on why they are so easy to find here is because of the arctic freeze/thaw cycle. The ice on the ocean starts to form around October/November and only breaks up and leaves mid-July. That leaves many months for it to get several meters thick, as well as working its way into all the cracks that form along the shore. And, as I'm sure you know water expands when it freezes, breaking those cracks even wider and busting off smaller pieces into gravel. Then, when it does finally break up the wind, tides and currents will often drag pieces of ice along the shore churning or tilling up all new rocks and fossils for you to find!

Since this island has been slowly rising out of the ocean over several thousand years there is numerous "raised beaches" that were once at sea level and are packed full of old creatures in amongst the random rocks and rubble.