Its enemies are frogs and fish.
northern Europe and Asia
nobody knows for sure what this spider eats exactly, but we know that its a meal itself.
All spiders, except for one species (the Diving Bell spider), live on land.
Adult female water spiders (diving bell spiders) are from 10 to 15 mm in length, but the males are generally larger, 12 to 19 mm in length. It is unusual for male spiders to be larger than the females of a species.
Diving bell spider was created in 1758.
spiders
In 1616, the German inventor Kessler introduced his diving bell with glass ports
Diving spiders make a sort of "diving bell" underwater. They live in there, so they need to fill it with air so they will have something to breathe. The spines on their body can trap air, so they rise to the top of the water, do a sort of somersault to throw themselves above the water surface and right back down into the water. When they come back under, they are covered in a bubble of air. They swim down to the diving bell where they shuck off the bubble of air. If there still is not enough air in their diving bell, then they may go back up again for another bubble.
The houseflies enemies, other than the human, are spiders.
Yes.It's "enemies" include birds and,possibly,spiders.
Eads
Water spiders, also known as diving bell spiders, are not deadly to humans. Their venom is not powerful enough to harm humans, and they typically only use it to immobilize their prey. However, their bite can be painful and may cause some mild symptoms like redness and swelling.