In rivers and ponds (wet places)
No they do not
No, leaches are from Phylum Annelida and Class Hirudinea, which is completely separate from Phylum Mollusca.
go on the internetfind out what you needgo buy the stuff you needgo kill the leaches
Yes it can kill them. I pray that your turtle won't be near leaches or in a lake with leaches because that is just wrong. -Hope this helps
No
leaches
you could drain the pool, but if you don't want to drain your pool, you could get a pool skimmer and get all of the leaches out of your pool and then carry the leaches to a near by sewer, or a murky pond/lake/river.
yes
No, they are invertebrate creatures.
Yes, blood.
yes