The answer to this question is all of the above. Why? Well, see below for an explanation!
It is important to dress in layers during the winter because first off, snow is liquid but is maintained in a solid and fluffy state due to low temperatures. That being said, the snow can melt in your hands or anywhere on your body if you do not wear the appropriate clothing. Layering down in clothing while it is wintertime can prevent snow from getting your body wet. It is also important to dress down in layers during wintertime because layers of clothing trap your body’s heat. All humans’ bodies give off internal heat and when you dress in layers, that heat is sustained within your clothing so you stay warm. Lastly, layering your clothing during wintertime can help prevent frostbite and hypothermia. Frostbite is a condition that is most common during the winter where your skin and its tissue freeze. If any of your body parts are exposed, it is likely that you could get frostbite. Hypothermia is a dangerous condition in which your body temperature significantly drops. If this continually happens without any treatment or address of the situation, you could potentially freeze to death.
Your final answer: Because all of these answers have correct explanations for why it is important to dress in layers during wintertime, your answer is “all of the above.” If you need help, let me know and I will gladly assist you.
In sardine fishing, the net is typically laid around the shoal and tightened like a bag. The net is then retrieved slowly to the side of the vessel and the fish are brought aboard. In the case of the Marazion deaths, the vessels involved will be relatively small and have limited storage space so keeping everything balanced is crucial. If by sheer bad luck the net encircled a shoal of fish that was larger than the skipper realised, the boat is immediately put in a dangerous situation. A large catch on one side of the vessel will create an imbalance that will make it much more prone to capsizing when in rough seas. A fisherman died off the coast of nearby Devon in 2012 when his heavily-laden trawler capsized in similar circumstances.
Therefore if the catch is physically too large to retrieve, the vessel would have no choice other than to release the bottom of the net so that the catch falls away.
So surely the fish will swim off? Sadly not in this case. Many midwater species like sardines and mackerel are quite delicate and vulnerable to damage due to the high number of fish caught in the net. In this instance the sardines would most likely likely have been incapacitated as a result of being hauled to the side of the vessel, and when released from the net they would have been washed ashore with the action of tide and waves.