Pollution will fishing happens in many forms. The equipment (boat) needs to be in tip/top shape to prevent oil/fuel contamination. Fishing line, plastic bag/bottle and soda cans are the most common pollution/liter while fishing.
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By not polluting and over fishing in the same areas
By not hunting them or catching them with a fishing net. No polluting or doing harm to them is best.
By not fishing them, killing them in any way, rearranging the ship routes, if they bother the octopi habitat, and not polluting waters.
They must keep air clean. We have to avoid emission of polluting gases.
Fishing. Polluting. Mining for oil. Sailing. Hunting them down when they kill someone. Eating them in Japan.
Diwali can be celebrated only by lighting. Not burning crackers will help to avoid pollution.
To help orca survive, humans can leave the orca alone, stop fishing, stop polluting, stop driving power boats.
Yes, it is. It can cause health problems and means we can't use the water. If we can avoid water pollution, we should at all costs because it can harm all life forms, including humans and animals, not to mention the plants growing alongside water we pollute. If you can avoid polluting water, do avoid it. If you can't, don't do whatever it is that would pollute it. If everyone stopped polluting our water supply, the human race would have a better stab at survival and we might be able to avoid facing extinction. If we stopped polluting water, all life forms would be able to survive easier. In short, yes, sewage water pollution is bad. Any type of pollution is bad.
The "progressive" tense of a verb in English uses the present or future of the verb to be with the present participle of the verb in question, so that we could say "is polluting," or "will be polluting." The present participle with the past tenses of to be forms a kind of progressive imperfect: "was polluting, has been polluting, had been polluting."
how can we stop polluting the nature
The threat of manatees is really only damaging your "precious" motor boat... *shakes head in disgust* but the threats to manatees are motor boats, fishing nets, and careless polluting people.