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.
Multicellular organisms fall within three of these kingdoms: plants, animals and fungi. Kingdom Protista contains a number of organisms that may at times appear multicellular, such as algae, but these organisms lack the sophisticated differentiation typically associated with multicellular organisms.lthough many protists are single-celled, mulitcellular algae are sometimes placed within this kingdom alongside the single-celled algae. Differences between algae and plants include the lack of specialized body parts. Perhaps the most vivid example of multicellular algae lies in the kelp forests in some coastal areas.