Humpback whales. Some cetaceans are in big trouble. The Yangtze River dolphin is down to a few individuals, at best. Right whales could disappear by the end of the century. Yet we’ve been repeating the “save the whales” mantra for so long that the real conservation status of most whales is widely misunderstood.
Humpbacks were endangered decades ago due to whaling, but international protection has helped them rebound so well that they are now listed as a “species of least concern.” The global pre-whaling population is estimated at about 125,000, and today they probably number about 80,000 individuals. Conservation efforts worked, and humpback whales are doing all right now.
Praying mantises. An urban myth has been circulating since the 1950s that praying mantises are endangered and that it is illegal to kill them in the United States. It would indeed be a shame to kill such a harmless and useful creature (mantises eat other insects that we consider pests), but there is no truth to the common belief that they are rare or protected. There are more than 20 species of praying mantis found in North America, and none of them are endangered.
Clouded leopards. Not actually a leopard at all, the so-called clouded leopard is the smallest of the big cats. A subspecies of clouded leopard in Taiwan became extinct during the 20th century, but there is no data showing that the overall population is in decline.
We know much less about clouded leopards than we do about most other big cats. There aren’t big-budget research and conservation projects devoted to studying them. This has led to some organizations officially labeling them as “endangered” largely for lack of information.
Clouded leopards historically overlapped geographically with tigers (which truly are endangered in the wild), but they haven’t been subjected to the same threats as tigers. Their bodies are not so prized for use in traditional medicine as tigers are; they prefer small prey rather than livestock, so they rarely come into conflict with humans; and they are not known to attack humans. Clouded leopards are also much more difficult to find and hunt than tigers. As tiger numbers sadly decrease, clouded leopards may increase in the absence of the larger predator that frequently kills its smaller competitors.
Deforestation in Thailand and India could very well mean trouble for clouded leopards. But the animals are found in at least half a dozen countries and probably number, among the two species and various subspecies, somewhere between 8,000 and 20,000. Without evidence of a downward trend, it is a stretch to call these cats “endangered,” but legal protection is wise until we know more about them.
Komodo dragons. Pop culture has often depicted the Komodo dragon as being on the cusp of extinction, as in the Mathew Broderick/Marlon Brando film The Freshman and Douglas Adams’ nonfiction book Last Chance to See. This claim doesn’t hold up to scrutiny.
There are presently around 5,000 wild Komodo dragons left, scattered among several islands. Since the species was first described by Western scientists in 1910, there have probably always been a total of between 3,000 and 8,000 dragons. Indeed, on the tiny islands where they are found, it would be difficult for the species’s numbers to ever get much higher. The current number of Komodo dragons is probably normal for them.
Komodo dragons do indeed face some long-term threats. The humans who share their islands are competing with them for food by hunting the same large prey. But a large park protects most of them, and dragon-seeking tourists provide a strong economic incentive to locals to preserve the species.
Polar bears. An iconic photograph of a polar bear clinging to a chunk of melting Arctic ice has driven home the idea that polar bears are going extinct due to global warming. But the science doesn’t necessarily back this up. There are 19 subpopulations of polar bears and eight of them are in decline. Warmer temperatures and shorter-lived ice mean that fewer polar bears can be supported than in the recent past, but there are more than enough to ensure the survival of the species.
There are currently about 25,000 polar bears worldwide. In the 1970s the species numbered somewhere between 5,000 and 10,000; their recovery since then is owed in part to a 1975 treaty regulating the hunting of polar bears. The International Union for Conservation of Nature predicts that numbers will decrease by 30 percent or more by the year 2053, mostly due to climate change. That is a dramatic loss, but it will still put polar bear numbers ahead of where they were.
DNA studies have shown that polar bears have existed as a species for about 600,000 years. They have lived through many warming and cooling periods in Earth’s history, and they didn’t become extinct during times when ice disappeared. Polar bears also interbred with brown bears during those phases when they had to seek out food on land rather than the seals that they now prefer. Neither hybridization nor global warming are likely to wipe out the polar bear anytime soon.
TODAY IN SLATE
The Budget Disaster that Sabotaged the WHO’s Response to Ebola
How Movies Like Contagion and Outbreak Distort Our Response to Real Epidemics
PowerPoint Is the Worst, and Now It’s the Latest Way to Hack Into Your Computer
Everything You Should Know About Today’s Eclipse
An Unscientific Ranking of Really, Really Old German Beers
Welcome to 13th Grade!
Some high schools are offering a fifth year. That’s a great idea.
The Actual World
“Mount Thoreau” and the naming of things in the wilderness.