The blue whale is endangered. But their population is growing! People are helping them be safe from trash and other boating mistakes or accidents. Lots is being done to help the blue whale. Many have helped them grow their population into a bigger community of blue whales. Though they are still endangered, and they are growing still.
Conservation
They are helping the blue whale by punishing anyone who harms or hunts for them. They could face jail time or possibly fines. That law has been helping the whales a lot.
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For climate changes, they move south since climate changes kill their prey (Krill) also over fishing of krill, and other prey hurt their ecosystem
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Another threat is being tangled in fishing nets or trash. People are helping the whales by not throwing trash in the water, and also by recycling their plastic and paper.
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People helping the blue whale are animal activists and company's that despise people throwing trash in the ocean and boating or hunting whales, Some people dump waste in sea even though it is illegal so that helps. People who hunt whales get a fine or get sent to prison