No they only live far out into the ocean.
yes
seahorses are found in warm shallow water
Yes, seahorses have gills. They have gills to get oxygen from the water so they can breathe.
no
no
water
under water
Seahorses are salt water and frogs are fresh water, there are special aquariums for salt water fish type creatures.
Yes.
they are cold blooded
Google Images.
Neither. Seahorses live in oceans, and oceans aren't considered running waters.