FREEDIVING ACCIDENT STATISTICS. Breath-hold diving â commonly known as freediving- an in-water activity with a mask but without the use of scuba or surface-supply breathing gas, has grown in popularity as an underwater activity with numerous sub-disciplines. While generally safe, the aquatic realm is unforgiving and serious injury or death can occur. Learning from freediving accidents is important to increase diver awareness and promote safety. Methods
Bacteria are not multicellular organisms. They are large group of unicellular microorganisms. One bacterium (the singular form of bacteria) is one small organism, and it is called a prokaryotic cell, or a prokaryote.
Organisms that consist of more than one cell are known as multicellular organisms. Multicellular organisms are made up of more than one cell. These cells identify and attach to each other to form a multicellular organism. Most of the multicellular organisms are visible to the naked eye.nicellular eukaryotic organisms-these organisms are unicellular and are eukaryotes. They have membrane bound true nucleus and other membrane bound organelles. These are mainly free living or aquatic parasites like the protozoans, some fungi and algae or some protists.