Does sea water have bacteria?

Of course there are bacteria in seawater. Bacteria are the most widely distributed and largest type of microorganisms, and the ocean is no exception. For example, there are Gram-negative bacteria in seawater. Generally speaking, such bacteria do not cause adverse effects on health. But please note that if you take a sea water bath, you must rinse it with clean water at the end to avoid adverse irritation to the skin. Let us learn more about this.

Of course. A prokaryotic single-celled organism that lives in the ocean and does not contain chlorophyll or phycocyanin. They are the most widely distributed and largest type of marine microorganisms. Their individual diameters are often less than 1 micron, and they are spherical, rod-shaped, spiral and branched filamentous microorganisms. No eukaryotes, tough cell walls. Motile species move using flagella. Strictly speaking, marine bacteria refer to those bacteria that can only grow and reproduce in the ocean.

Gram-negative bacteria are dominant in seawater, with more than 10 genera commonly found, including Pseudomonas, Vibrio, Achromobacter, Flavobacterium, Spirillum, Micrococcus, Sarcina, Bacillus, Corynebacterium, Zoanthella, Nocardia and Streptomyces; Gram-positive bacteria are predominant in ocean floor sediments; and Bacillus is the most common genus in continental shelf sediments.

Summer is here, and many tourists like to go surfing and swimming in the sea, which is indeed a pleasant sports and fitness activity. But in the joy of swimming, never forget safety. As the saying goes, "every step brings a new sea." The sea water is changeable and unpredictable, so we must always keep our safety string tight and adhere to the "ten don'ts."

1. Do not go to sea when there are strong winds and waves and a storm surge is affecting the sea;

2. After a few days of continuous easterly winds (including partial easterly winds), the sea water is most likely to form whirlpools and undercurrents, so don't go into the sea easily;

3. Don’t go to the sea when the tide is just beginning to ebb or rise, because the two forces of ebb and rise will collide with each other and form many whirlpools and undercurrents of varying sizes near the coast. If you are not careful, you may be swept into the sea and unable to extricate yourself.

4. Do not swim too far from the coast so that people on the shore can hear you when you call for help in case of distress;

5. Do not climb over the shark net or swim near the shark net to avoid getting entangled in the net and being unable to break free;

6. It is not advisable to go swimming in the sea after drinking or just after eating;

8. If you encounter waves at sea, don't panic. You must learn to dodge. If you are in shallow water, you can jump up when the wave reaches you. If there are big waves in deep water, you can leave your feet off the ground, float on the water and rise and fall with the waves. When you encounter a "rolling eaves" big wave, you must not confront it head-on. The best way is to dive into the water immediately, wait for the wave to pass, then quickly surface, breathe, and prepare to greet the arrival of the next big wave. Generally, there will be no more than three big waves. After three big waves, there will be a short period of calm and relaxation. This is the best time to choose to go ashore or change direction, but you must hurry up, as you will not have more than 10 seconds.

9. When swimming in the sea, fog often suddenly appears. At this time, you must stay close to the shore and do not swim too far. You should swim as far as you can see the objects on the shore to avoid getting lost.

10. If an accident occurs at sea, do not panic and perform self-rescue. When you are unable to get ashore for the time being, first remind yourself to stay calm. While sending out a message for help, it is best to float on your back and drift with the current to avoid excessive consumption of physical energy. Firmly believe that "when the tide rises, it will fall; when the waves pass, the waves will subside", and wait for the opportunity for rescue.