Question: The ball gets turned over to the defense if the attacker goes where without the ball?
About the article "Water polo", section "Advancing the ball".

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When the offense takes possession of the ball, the strategy is to advance the ball down the field of play and to score a goal.
Players can move the ball by throwing it to a teammate or swimming with the ball in front of them ("dribbling").
If an attacker uses his/her arm to push away a defending player and free up space for a pass or shot, the referee will rule a turnover and the defence will take possession of the ball.
If an attacker advances inside the 2-meter line without the ball or before the ball is inside the 2-meter area, (s)he is ruled offside and the ball is turned over to the defence.
This is often overlooked if the attacker is well to the side of the pool or when the ball is at the other side of the pool.
Often used as a training exercise, attacker-defender is a game for two people.
One takes on the role of the "attacker", the other takes on the role of the "defender".
The attacker begins in possession of the ball, with the defender a few metres away in a loose jockeying position.
There is a target line a short distance (approximately 5–15 metres) away from the attacker, and the aim is to dribble the ball over the line without the defender gaining possession.
If the attacker succeeds, it is a point to them and the roles are reversed, starting from scratch.
If the defender tackles the ball from the attacker, then the roles are again reversed, but the positions are not reset. 
 Bang / Bounce / Thump: A ball spiked very hard with a steep downward angle.
Beer: When an attacked ball goes through a defenders legs.
After being "Beered" the defender then owes the attacker a beer.
Blash: When a ball is blocked and the ball travels faster from the blocker to the floor than the attacker to the block.
Made famous by Cameron Billingham, the term comes from a combination of the words 'Block' and 'Smash'.
Block City: A fictional place that players claim to go when they are blocking very well.
Also known as Turkey Town.
(See "Stuff Turkey").
Butter / Nectar / Sauce / Cheddar Biscuits : A perfect set.
Chowder/Chum : A badly mangled set.
Crab Defense: When a player is serving, the opposing three passers shuffle side to side and pinch their hands like crabs to distract the server.
Deep Dish/Chicago style pizza/Evan set : An illegal set that is held excessively long, typically set from below the shoulders and seen in beach volleyball.
Dime : A perfect pass.
Dirt Dessert: When a player gets a kill so sweet, it's almost comparable to the utter sweetness of a classic Dirt Dessert.
Double-double : When a player accumulates double-digit amounts in two of five statistical categories—aces, kills, blocks, digs, and assists—during one match.
Facial / Six-Pack / Tattoo/ Dome : When a defending player gets hit in the face with the ball either from an attack by the opposing team or by a deflection off the block.
The term "six-pack" refers to the dizzying sensation of being hit directly in the head or face by a volleyball as being analogous to the dizzying sensation of having drunk a six pack of beer.
The abdominal muscles are sometimes referred to as a "six-pack," so getting hit in the stomach by the ball is getting 'six-packed.'
The term "tattoo" refers to marks left on the skin of the hit player by the seams/lettering on the ball.
Fishing: Making illegal contact with the net.
Hands : Hand setting.
Someone with "nice hands" sets well.
Heat : Speed.
Used to describe a hard-hit ball.
House / Stuff / Roof : When the defensive player blocks a ball so hard that it is immediately returned to the hitter and goes straight to the floor.
Hubby-wife / Campfire : In beach volleyball, when a serve drops between two players because the players don't decide in time who will pass it.
Jet Nai Heed : The act of intentionally blocking a spike from the opposing team.
Jungleball / Barbecue ball / Picnic ball : A volleyball game played by inexperienced players with little ball control.
Killshot : on a serve or a swing when the ball hits the passers neck or chest region, in between digging and getting facialed Nail : A perfect pass.
O.T.
: When an attacker hits the ball over top of the blocker and it lands in front of the defense.
Overkill : When an overpass (or a free ball) occurs and the opposing team attacks the ball for a kill.
Paintbrush / Whiff / Spatch : A mishit — when a player attempts to hit (or spike) the ball with the open hand and nearly misses the ball, only contacting the ball with his/her fingers resulting in a backspin on the ball.
Pancake Lake : An imaginary place a player (normally libero) goes when they repeatedly pancake a tipped ball or ball headed for the ground.
Party Ball : Opportunity for a front row player to return an overpassed ball with a hit.
Phone Booth : When a blocker's hands seal off every possible attack angle on a set ball.
Often referred to as, "It's like trying to hit out of a phone booth."
Popcorn setting/Sprinkler : When an unskilled setter is sending sets in a random pattern (like popcorn being popped, or like a water sprinkler on the grass).
Quadruple-double : When a player amasses a double-digit total in four of five statistical categories—aces, kills, blocks, digs, and assists—during a match.
Quintuple-double : When a player accomplishes ten or more aces, kills, blocks, digs, and assists during a match.
Rainbow : A shot especially on the beach that is hit over the head of the defender to the far corner and lands cleanly.
Also known as a Jumbo Shrimp (due to the arc/shape of the shot).
Rufio : A cheer done in volleyball, famous from the movie Hook, where a player blocks the opposing player straight down on the opposing players' side.
Players scream, Rufio, Rufio, Ru-fi-OOOOOO!!!
Scrappy : Referring to a team that doesn't let a single ball hit the ground without much effort.
(used positively) Shag : Picking up and collecting scattered volleyballs.
Spalding: when the hitters hit the ball and it hits the opposing defensive team in the face or on their body.
Spalding refers to the letters of the ball staying on the players face because it hit them so hard.
Spiketown/Bouncetown: A fictional place that a hitter claims to go to when he/she gets an impressive kill that bounces very high and no one can return (a lot of times near the 3 meter line.)
Stuff Turkey: A stuff block in which the ball hits the opponents floor before the blocker does; When such an event occurs, a player is said to have had his turkey stuffed.
Sui-set: A ball set too close to the net directly in to the hands of a waiting blocker; The attacker will get blocked most of the time.
Tool / Use : An attack which is deflected off an opponent (usually during a block) and is unplayable resulting in a point for the attacking team (also called a bounce off).
Tough Bacon : Any ball that is played in a way that makes it difficult for the next player to successfully play the ball.
For instance, after a bad set the intended hitter might remark "that was tough bacon".
Similarly, a setter might remark as such after a bad pass, or a passer might remark as such after a difficult serve.
Trap : A ball set too close to the net where the hitter typically gets stuffed.
Triple-double : When a player, during a single match, scores at least ten times in three of five statistical categories: Aces, kills, blocks, digs, and assists.
Vegas Line: A kill resulting from a powerful hard-line spike that penetrates or beats the opponents' line block.
So-named after Sean Rosenthal, a member of the AVP delivered such a memorable kill in Las Vegas, 2005.
Waffle: Another term for a mishit attack that results in backspin on the ball.
Waterfall Ball: When a players hit goes inside the block of the opposing team and falls down on their side much like a waterfall.
Yummy: When a player gets a kill out of an overpass from the opposing team.  
If the ball is fumbled the defensive team may recover the ball and even advance it to their opponents' goal.
The same is true for the offense, but usually when the offense recovers the ball it simply tries to down it.
In American football the offense cannot advance the ball if it recovers its own fumble on fourth down, or in the last two minutes of the game, unless the ball is recovered by the fumbler (there are no such restrictions in Canadian football).
However, if the offense fumbles the ball, the defense recovers and then fumbles back to the offense, they would get a first down since possession had formally changed over the course of the play even though the ball had never been blown dead.
In American football, there is no separate signal to indicate a fumble recovery.
If the offense recovers its own fumble, the official will indicate the recovery by a hand signal showing the next down.
If the defense recovers the fumble, the official will indicate with a "first down" signal in the direction the recovering team is driving the ball.
Some officials have erroneously used a "first down" signal when the offense recovers its own fumble and the recovery did not result in a first down.
This is not the same thing as when a forward pass is attempted and is not caught.
In this latter case, it is simply an incomplete pass.
However, if the receiver catches the ball, but then drops it after gaining control of the ball, that is considered a fumble.
Any number of fumbles can be committed during a play, including fumbles by the team originally on defense.
Most famously, Dallas Cowboys defender Leon Lett fumbled during Super Bowl XXVII while celebrating during his own fumble return.
A sometimes controversial rule is usually referred to as "the ground cannot cause a fumble".
If a player is tackled and loses control of the ball at or after the time he makes contact with the ground, the player is treated as down and the ball is not in play.
However, in the NFL and CFL, if a ball carrier falls without an opponent contacting him, the ground can indeed cause a fumble.
This is because in those leagues the ball carrier is not "down" unless an opponent first makes contact, or the runner is out of bounds.
If a player fumbles in most other leagues, as soon as the knee or elbow touch the ground, the ball carrier is considered down.
It is also possible for the ground to cause a fumble in college football if the ball hits the ground before any part of the ball carrier's body (other than the hand or foot) touches the ground.
An example was the fumble by Arkansas quarterback Clint Stoerner vs. Tennessee in 1998.
The effects of fumbles vary when the ball goes out of bounds without being recovered:  A fumble going out-of-bounds between the endzones is retained by the last team with possession (in Canadian football, the last team to touch the ball).
If the ball was moving backwards with regard to the recovering team, it is spotted where it went out of bounds.
If the ball was moving forwards, it is spotted where the fumble occurred (the fumble itself cannot advance the ball).
A fumble going out-of-bounds in the endzone being attacked results in the defending team assuming possession via touchback if the offensive team forced the ball into the endzone.
If the defensive team forced the ball into the endzone it is a safety for the offense.
A fumble going out-of-bounds in the endzone being defended is ruled a safety if the offensive team forced the ball into the endzone.
A fumble going out-of-bounds in the endzone being defended is ruled a touchback if the defensive team forced the ball into the endzone.
The ball is turned over to the defensive team.
In all cases, a fumble recovered by an out-of-bounds player is considered an out-of-bounds fumble even if the ball never leaves the field of play.
A punted or place-kicked ball that touches any part of a player on the receiving team, whether or not the player ever gains control, is also considered to be live and is treated like a fumble. 
Each team consists of six players.
To get play started, a team is chosen to serve by coin toss.
A player from the serving team throws the ball into the air and attempts to hit the ball so it passes over the net on a course such that it will land in the opposing team's court (the "serve").
The opposing team must use a combination of no more than three contacts with the volleyball to return the ball to the opponent's side of the net.
These contacts usually consist first of the "bump" or "pass" so that the ball's trajectory is aimed towards the player designated as the "setter"; second of the "set" (usually an over-hand pass using wrists to push finger-tips at the ball) by the setter so that the ball's trajectory is aimed towards a spot where one of the players designated as an "attacker" can hit it, and third by the "attacker" who "spikes" (jumping, raising one arm above the head and hitting the ball so it will move quickly down to the ground on the opponent's court) to return the ball over the net.
The team with possession of the ball that is trying to attack the ball as described is said to be on "offense".
The team on "defense" attempts to prevent the attacker from directing the ball into their court: players at the net jump and reach above the top (and if possible, across the plane) of the net to "block" the attacked ball.
If the ball is hit around, above, or through the block, the defensive players arranged in the rest of the court attempt to control the ball with a "dig" (usually a fore-arm pass of a hard-driven ball).
After a successful dig, the team transitions to offense.
The game continues in this manner, rallying back and forth, until the ball touches the court within the boundaries or until an error is made.
The most frequent errors that are made are either to fail to return the ball over the net within the allowed three touches, or to cause the ball to land outside the court.
A ball is "in" if any part of it touches a sideline or end-line, and a strong spike may compress the ball enough when it lands that a ball which at first appears to be going out may actually be in.
Players may travel well outside the court to play a ball that has gone over a sideline or end-line in the air.
Other common errors include a player touching the ball twice in succession, a player "catching" the ball, a player touching the net while attempting to play the ball, or a player penetrating under the net into the opponent's court.
There are a large number of other errors specified in the rules, although most of them are infrequent occurrences.
These errors include back-row or libero players spiking the ball or blocking (back-row players may spike the ball if they jump from behind the attack line), players not being in the correct position when the ball is served, attacking the serve in the front court and above the height of the net, using another player as a source of support to reach the ball, stepping over the back boundary line when serving, taking more than 8 seconds to serve, or playing the ball when it is above the opponent's court.