Whenever i go to the beach i'll be honest... i'm paranoid. I buy a turkey roasting bag and wrap my entire camera up in it... tie it off well and put a rubber band around the tip of the lens and cut away the plastic for a clear shot. That's the ONLY way i feel safe. I'm crazy paranoid though so what does that mean? I'd be very cautious without a weather proofed body (yours isn't one) because the tiniest amount of sand inside a camera or lens can jack some stuff up. A turkey bag and rubber band is like 2 bucks and very affordable insurance. Nothing wrong with looking stupid to protect your equipment.
The name is pronounced bonn-gee-bee
Canon 1Ds Mark II
Canon 20D + BG-E2
Canon Elan 7e
Canon 70-200 f/2.8L USM IS
Tamron 17-50mm f/2.8 XR Di II LD Aspherical [IF]
Canon 50mm f/1.8
Canon 28-105mm f/3.5-4.5 USM
Canon 135mm f/2.8 Soft Focus