Yes, they may bite, but the bite is never fatal.
orb spiders
Furrow spiders belong to the genus Larinioides.These spiders weave orb webs. No spiders that weave orb webs are dangerous to humans.
There are 3,006 species in 168 genera worldwide, making Araneidae or orb weaver the third largest family of spiders known.
Orb Weavers: Family Araneidae Genus Araneus Argiope (Writing Spiders) Cyclosa (Trashline Orbweaver) Cyrtophora (Tropical tent-web Spider) Eriophora (Tropical Orbweaver) Gasteracantha (Spinybacked Orbweavers) Larinioides (Furrow Spiders) Larinia (Striped Orbweaver) Neoscona (Spotted Orbweaver) Orb Weavers: Nephilidae Genus Nephila (Golden Orb Weaver) Orb Weavers: Tetragnathidae Longjawed Orb Weavers Orchard Spider More Web Spiders Cellar Spiders Cobweb Spiders (Theridiidae) Funnel Web Spiders Hacklemesh Weavers (Amaurobiidae) Sheetweb Spiders (Linyphiidae) Hunting Spiders Crab Spiders Daddy Long Legs Fishing Spider Ground Spiders Jumping Spiders Lynx Spiders Hobo Spider House Spiders Huntsman Spider Running Crab Spiders Tarantulas Wolf Spiders Yellow Sac Spider
yes
There are lots of species of orb spider in Australia, we have some of the biggest in the world!
Orb weaver spiders live all around the world. There are over 4,000 known species. The spiders will live anywhere there are bugs to eat.
If by "redback spiders" you mean the kind of widow spiders that grow in Australia, they make the same kind of three-dimensional tangled filament webs that all the member of their Family make. Some other kinds of spiders make orb webs, sheet webs, etc.
Like other spiders they make a web to catch flying insects.
The Maldives have several types of spiders including brown Huntsman spiders, black widows, lynx spiders and Argiope anasuja (orb spiders).
Orb weavers cut down the number of insects like flies by a huge amount. They keep the balance of insect/spiders in check, like most spiders. If there were no spiders, flies would overrun the place, even though birds etc. would still eat them, spiders are highly important
Orb weavers eat all flying insects. They will eat any bug or small organism that they can catch in their web.