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Whales

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Whales

Whales face many threats to their welfare, health, and their existence. The main cause is commercial hunting and pollution. Chemicals and pesticides can poison their internal systems, while discarded rubbish like nets, plastics or fishing lines can strangle the animals to death. Whales are, just like dolphins, highly acoustic mammals. Noise caused by coastal developments and industrial activities can disrupt whales. Tourism also effects whales. They can feel very harassed, especially when they are breeding and calving.
whales
When chemicals pollute the oceans, the food of whales also gets polluted. Female whales then pass these pollutants directly on to their young through their milk, which can result in death or disability. These pollutants also cause the lowering of the whale's resistance to disease. This means they are more likely to die from diseases.

Commercial as well as scientific whaling by countries as Japan and others remains a huge threat to the survival of certain whale species.

More about:

Entrapment in fishing nets and marine pollution are threats various dolphins have to deal with.
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Whales in the News

Dolphins and Whales News -- ScienceDaily

A bucket of water can reveal climate change impacts on marine life in the Arctic - We know very little about marine life in the Arctic. Now researchers are trying to change that. They have shown that a simple water sample makes it possible to monitor the presence, migration patterns and genetic diversity of bowhead whales in an otherwise hard-to-reach area. The method can be used to understand how climate changes and human activities impact life in the oceans.
Hormone metabolites found in feces give researchers new insight into whale stress - Fecal samples are an effective, non-invasive tool for monitoring gray whale reproduction, stress and other physiological responses.
New population of blue whales discovered in the western Indian ocean - An international team of researchers has discovered what it believes to be a new population of blue whales in the western Indian Ocean.