What is kelp ?why should people who fish for living know about kelp?

a large brown seaweed that typically has a long, tough stalk with a broad frond divided into strips. Some kinds grow to a very large size and form underwater “forests” that support a large population of animals. When kelp populations are threatened or low, transient fish will move to a more protected spot.  So bad kelp population = bad fishing spot.

Explanation:

kelp is a form of algae that many fish eat kelp grows far down under the water there are normally fish near or feasting on kelp so that have you ever helped the fisherman

the third one.

hope it