this post was submitted on 09 Apr 2026
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Biodiversity

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A community about the variety of life on Earth at all levels; including plants, animals, bacteria, and fungi.

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Biodiversity is a term used to describe the enormous variety of life on Earth. It can be used more specifically to refer to all of the species in one region or ecosystem. Biodiversity refers to every living thing, including plants, bacteria, animals, and humans. Scientists have estimated that there are around 8.7 million species of plants and animals in existence. However, only around 1.2 million species have been identified and described so far, most of which are insects. This means that millions of other organisms remain a complete mystery.

Over generations, all of the species that are currently alive today have evolved unique traits that make them distinct from other species. These differences are what scientists use to tell one species from another. Organisms that have evolved to be so different from one another that they can no longer reproduce with each other are considered different species. All organisms that can reproduce with each other fall into one species. Read more...

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Orcas never seen before in Seattle delight whale watchers with a visit (news.mongabay.com)
submitted 6 days ago by Salamence@mander.xyz to c/biodiversity@mander.xyz
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cross-posted from: https://hexbear.net/post/8175124

cross-posted from: https://news.abolish.capital/post/40071

Seattle (AP) — When tourists travel to Seattle, it’s common to take in the Space Needle and the downtown skyline from Puget Sound. It’s an itinerary that a newly arrived pod of killer whales appears to be following too. Three orcas that had not previously been recorded in the Seattle area have delighted whale watchers with several visits just off downtown this past month. They’ve also cruised by other shorelines in the region. “People … are all very happy to see this,” said Hongming Zheng, who photographs whales in his spare time. It took him 10 hours of driving to find the mysterious pod. “It was epic.” Researchers keep detailed records of killer whales that frequent the Salish Sea, the waters between Washington state and Canada, by identifying their fins and saddle patches — the grayish markings on their sides. So it was a surprise when this pod of three orcas showed up in Vancouver, British Columbia, in March. The three weren’t in any catalogs of local whales. After some digging, researchers located photos of the pod in Alaska waters last year, said Shari Tarantino of the Washington-based Orca Conservancy. The pod includes an adult female and what are believed to be her two offspring, including a large young adult male. They have now been designated as T419, T420 and T421 — the T standing for “transient,” not “tourist.” The visiting orcas have something that local whales don’t: circular scars left by cookie-cutter sharks, which latch on to larger animals and slice a…This article was originally published on Mongabay

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