Just to re-emphasise the real dangers of swimming in the sea off the Goan beaches.
Certainly off Baga the sand shelves quite steeply into the sea and it's easy to get out of your depth. The shelving beach also causes the waves to break so there is a turbulent zone just off shore (knee to waist deep) where it can be very difficult to keep your feet when caught by waves. Watch for a wave breaking then wade in or out through this zone as fast as you can before the next wave comes in.
Once clear of the turbulence wade out until the water is chest deep then stay at that distance off shore - go much further and you'll quickly be out of your depth! You can comfortably float/swim in this zone but watch out for the periodic larger waves that roll in and break early - best to rise up with them as that's far more comfortable than being swamped! There is a strong under tow in places which could easily pull you out of your depth if it catches you and there are channels in the sand which suddenly give deeper water. There is also a bit of longshore drift to be aware of. The band where you can swim in comfort/safety is quite narrow.
All in all it's not an easy place for swimming - potentially quite dangerous.
That said, I'd never been to Goa before November last but I was aware that the sea can be dangerous along that coast. I'm not a swimmer (not been in the sea for many a year either!) but soon worked out the above method and really enjoyed going in sea as a result. My partner was used to more tranquil water though and found it quite intimidating.
If in doubt then stick to paddling.
The sea looked calmer off Palolem but I didn't venture in. Up at Querrim the beach seems to shelve even more steeply than at Baga and the swell looked to be very powerful - so I contented my self with paddling in the shallows.
Better safe than sorry.