Diving to depth is a typical behaviour observed in many aquatic mammals such as; whales, otters, seals, walrus and many others. Such mammals are well adapted at diving.
Oxygen comprises a large proportion of our atmosphere (21%) and has become a vital gas for many organisms on Earth. Without it our ability to produce energy (as
Respiration is the process of obtaining sufficient oxygen from an organism’s environment to support its cellular metabolic requirements. Respiration is not just the mechanical process of breathing -