UPDATE 2-MarineMax posts wider-than-expected loss, shares tank

* Q2 adj loss/shr of $0.50 vs est loss of $0.43

* Q2 revenue down about 44 pct

* Same-store sales down about 41 pct

* Gross profit falls 64 pct

* Shares fall 38 pct

(Recasts; adds analysts' estimates, comments, conference call details, share movement)

By Renju Jose

BANGALORE, May 7 (Reuters) - Boat retailer MarineMax Inc (HZO.N: Quote, Profile, Research) posted a wider-than-expected second-quarter loss on inventory writedowns and a revenue drop that squeezed gross profits, sending its shares down 38 percent.

"We experienced softness across all of our markets and segments that we participate," finance chief Michael McLamb said on a conference call with analysts.