Location of Underwater Caves in Ukraine?

[bigplik]

Hi, I would like to ask about location of some of Ukrainian underwater caves. I have seen some info even on this portal but there is only general information that underwater caves in Ukraine exist.
I am certified and experience cave diver and would like to ask anyone who can help me to organise information about maps, present explorations and location of underwater caves in your Country.
In return I can offer information about location underwater caves in Republic of Ireland where I had dived frequently lastly.

best regards
pawel