Italian seaplanes in June 1940

[net_sailor]

Hello,

I'm looking for info about few Italian seaplanes actions:

1. At night 20/21 June some Z.501 and S.79 bombed Bizerte area. How many seaplanes were send and lost?
From French claims I counted at least 5 attacking planes but two of them could be S.79 (two rows containing series of 8 and 9 bomb were found on the ground - too heavy bombload for Z.506).
Anyway French AA claim one seaplane shot down near Saint-Jean fort and another damaged (piece of construction, sort of hath, was raised from the sea). There is more detailed info from Italian sources about these planes (unit, crew loss)?

2. On 22 June French LeO 470 of E11 spotted C.506 seaplane floating along Italian submarine. French crew attacked the ship (missing target) but C.506 took of and escaped. Any further info about this C.506? Name of submarine will be also appreciated.

3. O 24 June about 18.00 a LeO 470 of E11 engaged in air combat with C.506. Probably there were no serious damages on both side. Anybody knows crew/unit of Italian seaplane was involved?