Is this correct or does it need a comma? "There were so many people on the beach we couldn't get to the sea."?

[19magic]

I would use a comma after beach and then use that to connect the latter part

[Dinosaursandanime65]

They need to let the sea take them. It nearly got me once..

[veselavrba]

Doesn' need a comma

[Anonymous]

You could possibly use one after beach.

[Avicenna]

Not needed

[Nikki1989]

It doesn't need one.