Is there such thing as water spiders?
Answers:
Heh! You're seeing the normal result of a normal spring in all those bugs you're encountering. Both dangerous spiders - black widows and brown recluses - tend to be very reclusive - no pun intended. You're not very likely to encounter any in your pool - unless where you're swimming is in a natural pond, lake or stream, in which case it is possible someone or something might accidentally dislodge one of the critters from its hiding place and knock it into the water.
Most spiders you will encounter won't hurt ya - they'll try to get away instead, altho in the water getting away is harder for 'em at times than you might think. Probably what you're seeing is an insect commonly called a water wader or water skater - they don't bite, but I admit I don't much care to encounter the danged critters either - so once every twenty minutes or so while your pool is in use, get out, grab that nice little long-handled tool with the screen on the end and skim the dang bugs and leaves and stuff out and toss it out on the grass. Its just something y'gotta deal with when y'gots a pool!
Other answers:
yes
yes
Diving bell spider
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?Diving bell spider
Scientific classification
Kingdom: Animalia
Phylum: Arthropoda
Class: Arachnida
Order: Araneae
Family: Cybaeidae
Genus: Argyroneta
Species: A. aquatica
Binomial name
Argyroneta aquatica
Clerck, 1757
The diving bell spider or water spider, Argyroneta aquatica, is a spider which lives entirely under water. Though it could survive on land. Since the spider must breathe air, it constructs from silk a diving bell which it attaches to an underwater plant. The spider collects air in a thin layer around its body, trapped by dense hairs on its abdomen and legs. It transports this air to its diving bell to replenish the air supply in the bell. This allows the spider to remain in the bell for long periods, where it waits for its prey.
The spider is found in ponds in the palaearctic region, which includes Europe, northern Asia, and Africa north of the Sahara desert. It lives for approximately two years. It is velvet-grey, however the trapped air around its body gives it the appearance of being silver. Unusually for a spider the males (9 - 12 mm) of this species are often larger than the females (8 - 15 mm).
yes, water spiders are common, and come in many sizes and species. it would depend on which one to know if they're dangerous or not, but I feel it's unlikely.
There are actually water striders, which walk across the top of the water without breaking the surface tension. They're harmless. Other, sometimes harmful spiders are drawn to the moisture and fall into the pool. If the creature isn't striding across the top of the water, it's an ordinary spider and all poisonous spider identification techniques apply.
There is actually a spider that brings a bubble of air down below the surface of the water and it ventures out from there but I doubt that's the kind of spiders you have. A lot of predators hang around water because it's a good place to find prey that need to get water on a regular basis and plants grow near water that provide food for prey animals as well.
Yes there are, they are good for the enviromnment and get rid of mosquito larvae and other bugs from standing water, lakes and ponds..so dont smash them..they dont bother humans