These ice structures are fresh water that travel floating to the drift. It's surprising how salted water requires lower temperatures for being frozen, and the methodology based on water density that avoids freezing in very cold zones. Polar areas are losing a great quantity of ice, from satellites to local studies so it's the best example of how something has been incorrectly planned and its consequences.
It's not the best time to forget it and letting things go worse like non rational species! Take action going toward clean energy avoiding sources of pollution and toxicity.