Giant Antarctic sea spiders can have leg spans of more than 70cm, and new research seems to bring into question a theory about how they got so big. US researchers warmed up two types of the spiders to test something called the ocean-temperature hypothesis. SIMON REEVE Scientists were testing a theory about why animals that evolved in the Antarctic grew so big. To test the ocean-temperature hypothesis, the researchers collected sea spiders of a range of sizes near McMurdo Station. But at the three lower temperatures, larger animals righted themselves more times each hour than the smaller animals.

Source: Stuff April 09, 2019 23:51 UTC