Hedvi Beach is a black sand cove between the two white sand beaches of Guhagar-Velneshwar and Ganpatipule. Hedvi beach is a small stretch with the end towards the Uma Maheshwari temple dominated by rocks. Avoid getting into the water here. If you are very particular about a dip in the sea the far end is better.
A word of caution : Hedvi beach is not the safest beaches for a swim and a dip ideally should be avoided.