Balcak Hairy Spiders (Tarantulas) in Swimming Pools
The black hairy spiders that are often found in swimming pools are Tarantulas. You can read about there here in
Wikipedia.
Tarantulas have a poisionous bite but this no worse than a bee-sting. They are not agressive and have to be provoked or surprised before they will bite a human.
A problem for small children could be that the Trantula does not have much fear of humans, like most wild creatures, and would not generally run away.
During the hot weather they are often found (usually drowned) in swimming pools. I think that they are trying to drink the water and perhaps fall in.
Poor little things! Linka - Why don't you leave out a saucer at night?
Other poisonous creatures in Spain: The very worst is the Black Widow Spider

but they are very rare - fortunately! Even so their bite is rarely fatal.
We have wasps, bees and even adders, just the same as in UK!
Scorpion stings can be quite painful but not life threatening.
All of these creatures (except bees and wasps) are not agressive by nature and want to get away from humas. However, if you get bitten by anything it is always best to get medical attention and a good idea is to go to a pharmacia.
Personally, if I came across a tarantula, snake or even a scorpion, I would not kill it but just let it get away. The problem with Tarantulas is that they don't want to move, so I would capture it and move it to somewhere safe.
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