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Australian scientists have just discovered a new species of arachnid, dubbed the giant trapdoor spider, in Queensland. It’s huge, bright red, and it can live for up to two decades.

Before you panic, we should note that trapdoor spiders aren’t considered a threat to humans. While they are venomous, their bites aren’t known to have any lasting effect on people, reports the BBC. Besides, hikers rarely encounter them; the spiders are nocturnal and spend most of their lives underground. And while they’re big for trapdoor spiders, they’re not as massive as, say, tarantulas or giant desert scorpions.

Female giant trapdoor spiders can grow up to two inches long. That’s about twice the size of other trapdoor spiders. Male trapdoor spiders are slightly smaller.

A recent study published in the journal Algal Research summarized the existing knowledge on bioactive compounds in green seaweeds and Ulva spp., focusing on its application as a future superfood.

Seaweeds are macroalgae, colonizing brackish water bodies and seas, and are classified into brown, green, and red algae. Research suggests that seaweeds are enriched with bioactive compounds with therapeutic potential. Seaweeds are also good sources of nutrients, antioxidants, and dietary fiber and have a low caloric value.

Ulva lactuca, a green alga, is a source of carotenoids, ulvan (a polysaccharide), proteins, minerals, vitamin C, and dietary fibers. In the present study, the authors discussed the chemistry and applications of bioactive compounds of green seaweeds, mainly focusing on U. lactuca and emphasizing its application as a superfood.