Hypselodoris ghardaqana is a species of sea slug, a dorid nudibranch, a marine gastropod mollusk in the family Chromodorididae. [Wikipedia]
Facts about dive spot: "Shaab Marsa Alam"

• It is in Egypt
• dive spot: "Shaab Marsa Alam" is in the Red Sea.
• The typical depth is 0-30 Metres 0-100 Feet.
• The typical visibility is 10-30 Metres 30-100 Feet.