What is a riptide?

Question

What is a riptide?

Answer 1

when two currents coming from opposite directions collide to make this sort of x shaped rifty thing. anyways they can be super strong, and you dont want to caught in one.

Answer 2

a strong flow of water returning seaward from the shore.

Answer 3

http://en.wikipedia.org/wiki/Rip_current

Answer 4

Opening a box of laundry detergent ?

Answer 5

Its when to strong Waves are both pulling the oppisite way and they cause super stronge riptides that pull you out to sea with them,The only way to get out of one swim the oppiste way,Very hard!Hollywood