What is Water Proofing?
![Picture](/uploads/2/4/9/5/24959636/701731491.jpg?290)
Waterproof or water-resistant is when objects are relatively unaffected by water. In your everyday life you will find objects that fit the description above such as:
And more!
- Umbrellas
- Rain boots and raincoats
- Certain device cases
- Swim wear (not necessarily unaffected by water but built for water)
- Boats and ships
And more!
Aboriginal Use of Water Proofing
![Picture](/uploads/2/4/9/5/24959636/444507521.jpg?317)
Blubber was often used by the Aboriginals to create water proof jackets and boots. Seals are an example of an marine animals which the Aboriginals used. Seal hunting was widely popular in Canada and is where most seal hunting has taken place. There is evidence that concludes that First Nations have been hunting seals for at least 4, 000 years.
Seal skins can be used for clothing, storage containers, seal-skin rope, and boat construction. Seal intestines can be made into waterproof garments, and seal stomachs become water and oil containers.
Seal skins can be used for clothing, storage containers, seal-skin rope, and boat construction. Seal intestines can be made into waterproof garments, and seal stomachs become water and oil containers.
Blubber
![Picture](/uploads/2/4/9/5/24959636/4532130.jpg?472)
Marine animals have a durable exterior known as blubber. The blubber acts as a form of insulation to keep the mammals warm in freezing waters. Blubber is not only used for insulation but it also stores energy and increases buoyancy (the power to float or rise in a fluid). Seal skin is also known as adipose tissue; it is a thick layer of fat. This is found under the skin in all marine animals
Storing Energy
![Picture](/uploads/2/4/9/5/24959636/186137839.png?378)
Energy is stored in the thick layer of blubber. The energy stored in blubber includes both proteins and fats (mostly lipids). The ability of blubber to use these stored nutrients means marine mammals are not forced to search for food for long periods of time.
Because blubber is made up of necessary nutrients such as omega-3 fatty acids and vitamin D, naturally you would think that digesting blubber is a good idea. You are wrong. Blubber was often digested before it was found to be a serious health risk. Blubber is often found to have large traces of mercury and also contains naturally-occurring PCBs,which can damage human nervous, immune and reproductive systems
Because blubber is made up of necessary nutrients such as omega-3 fatty acids and vitamin D, naturally you would think that digesting blubber is a good idea. You are wrong. Blubber was often digested before it was found to be a serious health risk. Blubber is often found to have large traces of mercury and also contains naturally-occurring PCBs,which can damage human nervous, immune and reproductive systems
Insulation
![Picture](/uploads/2/4/9/5/24959636/115286756.jpg?497)
To insulate the marine mammal, blood vessels in blubber constrict, or get smaller, in cold water. Constricted blood vessels reduce the flow of blood, reducing the energy required to heat the body. This conserves heat.
The process is also known as as thermoregulation. Thermoregulation is the ability of an organism to maintain its body temperature when the surrounding temperature is different or has changed.
The more lipids a marine animals blubber contains the better it is at maintaining body heat, which is important for keeping vital organs warm and functioning properly.
The process is also known as as thermoregulation. Thermoregulation is the ability of an organism to maintain its body temperature when the surrounding temperature is different or has changed.
The more lipids a marine animals blubber contains the better it is at maintaining body heat, which is important for keeping vital organs warm and functioning properly.
Buoyancy
![Picture](/uploads/2/4/9/5/24959636/905909442.jpg?373)
Finally, blubber helps marine mammals stay buoyant, or float. Blubber is generally less dense than the ocean water surrounding it, so animals naturally float.
Animals with the thickest blubber, such as right whales, are found in Arctic and Antarctic regions. In these animals, blubber is more than a foot thick! The thickness of their blubber does not indicate better energy storage, insulation, or buoyancy, however. Those characteristics are determined by the chemical property of the blubber.
Animals with the thickest blubber, such as right whales, are found in Arctic and Antarctic regions. In these animals, blubber is more than a foot thick! The thickness of their blubber does not indicate better energy storage, insulation, or buoyancy, however. Those characteristics are determined by the chemical property of the blubber.
Apidose Tissue
![Picture](/uploads/2/4/9/5/24959636/946608194.jpg)
Apidose tissure is primarily composed of lipocytes and fat cells which specialize in storing energy as fat.
Adipose tissue is a connective tissue that specializes in the synthesis and storage of fat reserves. In mammals, adipose tissue exists in both a brown and a white form, each serving different bodily needs.
Adipose tissue is a connective tissue that specializes in the synthesis and storage of fat reserves. In mammals, adipose tissue exists in both a brown and a white form, each serving different bodily needs.