Extinct

Frank Ford sent me an article from The Independent entitled "Extinct: the dolphin that could not live alongside man". Here's part of what it says:

After more than 20 million years on the planet, the Yangtze river dolphin is today officially declared extinct, the first species of cetacean (whale, dolphin or porpoise) to be driven from this planet by human activity.

An intensive six-week search by an international team of marine biologists involving two boats that ploughed up and down the world's busiest river last December failed to find a single specimen.

Today, the scientific report of that expedition, published in the peer-reviewed journal of the Royal Society, Biology Letters, confirms the dolphin known as the baiji or white-fin in Chinese and celebrated for its pale skin and distinctive long snout, has disappeared.

To blame for its demise is the increasing number of container ships that use the Yangtze, as well as the fishermen whose nets became an inadvertent hazard.
...
The Yangtze dolphin navigated by sonar - its eyes are useless in the murky water - but in a motorway jammed with container ships, coal barges and speed boats, its sonar was deafened and it ran a high risk of being hit or torn by propellers.

An even greater threat came from the nets and 1,000m lines of hooks used by fishermen.

Although they did not intend to catch dolphins, the creatures became entangled in the nets or lacerated by the bare hooks - almost half of all dead baiji found in the past few decades have died in this way. In addition, pollution had fouled their natural habitat and completion of the Three Gorges Dam worsened the decline in smaller fish on which the baiji fed.

Truly tragic. Heartbreaking.