Can you touch the net or go under it in beach volleyball?

Net:

• Net contact between the antennae, or with an antenna, during the action of playing the ball is a fault. That action runs from take-off through the hit or attempt to a safe landing.
• Also faults: using the net as a support, gaining an unfair advantage by touching it, hindering an opponent's attempt to play the ball, and holding the net.
• Not faults: touching the posts, the ropes or the net outside the antennae without interfering; the ball driving the net into a player.

Ball:

• It must cross between the antennae and may touch the net.
• A ball hit into the net may be played out of it within the team's hits.
• If the ball tears the net or brings it down, the rally is replayed.

Under and beyond the net:

• A player may enter the opponents' space, court or free zone if this does not interfere with their play.
• A player may go into the opponents' court to play a ball before it passes outside the crossing space or wholly under the net.
• Touching an opponent or the ball in the opponents' space before or during their attack hit is a fault.

Sand makes it hard to stop at the net, so the test is interference, not a line on the ground. The net itself is still off limits while playing the ball.