2, if you touch not the tentacle parts of the jellyfish will be fine, peach jellyfish tentacles have some stinging cells, once stimulated, the jellyfish will release the stinging cells to attack, and the stinging cells are with toxins.
3, do not use your hands to catch after seeing. After scratching the peach blossom jellyfish place swollen up can use ice compresses, can also be coated with some anti-swelling agents, if serious should go to the hospital for medical treatment.