Errores

When the Mariner ties a rope onto his leg at the end, he is wearing boots, but when he jumps off, he is barefoot.

Helen's outfit turns from a leather top, Capri pants with a mesh covering, to just a mesh covering to seduce the mariner, back to the leather top/Capri/mesh thing then when the crazy drifter arrives, the Capris turn into a skirt.

Mariner drops a sail on Helen, but the next shot of the boat shows both sails raised.

When the trader comes aboard he says that he has two pages of paper. When the mariner begins looking through the tube he pulls out at least four pages.

When Mariner first arrives at the atoll and is trading his dirt, he is told that it is 3.2 kilos (roughly 7lbs) and that they measure it as pure hydro. Even with receiving double the money as he demanded, that would have afforded him at most 2 gallons of water. As he is trying to leave he is seen with at least 5 gallons of water along with all the other items from the store.

Crude oil does not catch fire and explode the way refined gasoline does.

If the icecaps melted, the oceans would only rise a few hundred feet; not enough to flood civilization into a floating oblivion.

When they are escaping from the smokers (who had concealed their jet skis below water) the mariner fires a kite into the sky to increase the speed of his trimaran. However, the sails are clearly set to close haul, which means he is sailing "into" the wind (at 45 degrees). The kite would just get blown behind the boat and act as a drag.

The map tattooed on Enola's back show the latitude and longitude of Dryland. In the absence of any orbiting GPS satellites, the only way to calculate one's longitude is to know the time at some standard longitude (such as the Greenwich Meridian) when it is local noon at one's current position. Since the world is now covered (almost) entirely by water, there are no standard geographical features against which to measure longitude, and no character in the film possesses any sort of clock. Nevertheless, the characters seem to have no difficulty using the map to find Dryland.

Deacon is a heavy smoker, therefore his teeth should be coated with cigarette stains, but if you look closely his teeth are white and clean.

The crude oil contained in The Smokers' tanker would not be able to power their boats, jet skis and other engines without refinement, or high octane required for the seaplane. It would stand to reason that The Smokers possessed the ability to minimally refine the crude oil so that it would run their engines, but not burn efficiently & smoke - giving them the name "Smokers".

Because of the scarcity of fresh water, it is highly valued. This is clearly demonstrated very early in the film as the Mariner uses a device to purify his own urine to make it drinkable. One would assume that any device able to purify the salt and wastes from urine could be used to purify ocean water. This issue is addressed in the SciFi channel's extended broadcast in which the Mariner, Helen & Anola all contribute their urine for purification. Helen asks "why don't you use sea hydro?". The Mariner replies "The salt's harder on the filters"

Everyone on the tanker is smoking, even though there's no land to grow tobacco. There's a huge stash of pre-cataclysm cigarettes onboard.

Judging from the trading scene between the Mariner and the crazy drifter, paper appears to be a highly rare and valuable commodity, and yet the Smokers burn large amounts of paper by smoking cigarettes. However, the Smokers are portrayed as pirates, who don't trade with anyone, just take by force, so their idea of material wealth is much different than that of the traders. In fact, the Smokers' technology and oil supply (not to mention alcohol) would be much more valuable than any amount of paper, had they decided to trade with others, instead of robbing them.

Throughout the movie the smokers use guns and a variety of machinery. It is entirely possible that they could have a very large cache of ammunition (ammunition keeps for many years properly stored), especially if they also have a large cache of cigarettes. Additionally, while the multitude of boats and other watercraft they launch from their "mother ship" is a bit far fetched, it is also plausible that they might have a shop inside that huge ship to maintain these craft.

In a world where the few people still alive are lacking modern technology, filthy, dressed in rags and barely surviving, Helen still manages to have smooth legs and armpits.

The "rust holes" in the side of the supertanker are much too conveniently placed for the Mariner to easily climb into the hull. They also show obvious signs of being precision-cut with an oxy-acetylene or plasma cutter, not gradually and randomly corroded as they should be.

When the Mariner rescues Enola just before the three jet-skis collide he leaps off the balloon with a rope around his ankles. Yet when he picks up the girl just in time he bounces back up as if he was on a bungee-rope. He wasn't attached to such a rope and therefore would just break his legs when the rope became taunt.

At least twice, the point is made that the Mariner has webbed toes. Several times, though, the camera shows his feet and his toes are spread apart.

When the seaplane shows up to capture the girl and the Mariner dives inside the hull of the boat to grab a gun, fog/misters can be seen on the wall next to him producing the 'smoke' from the gunfire of the plane.

When Helen is telling the Mariner about Enola, she describes her as a mirror - drawing what she sees. However, later in the movie, she is discussing with the Mariner whether or not dry land exists and describes various items on his boat including "that reflecting glass". How does she know to describe Enola as a mirror, yet is baffled by reflecting glass?

When Helen and the Mariner return to the surface after the attack, there is no mast or booms. Even if the Mariner's boat was burned, those items were made from metal. It would take a welding torch to cut them, yet they are all gone.

Late in the film Mariner picks up a piece of paper from underwater to the distinct sound of dry crackling paper.

Support divers visible when Mariner is diving to the bottom of the ocean [widescreen only].

Just before the Mariner leaves dryland, there are figures on the beach, walking through the back of shot, one wearing brightly coloured clothing. Lots of passers-by in this 'uninhabited wilderness'...

Gas bubbles from breathing apparatus when Mariner is teaching the girl to swim.

In extended version, right after shot when one of unfortunate jumping "smoker" fell on mariner sinking cage, another two jet ski jumping over atoll. Then jump another one ski jet, but is clearly visible, that jet ski is tied on hanging lines and drag in air over fighting atollers.

When Mariner is leaving on the jet ski to rescue Enola there is a mountain/cliff visible on the right.

Land visible on the left-hand side of the screen, just before the smokers turn up.

In a world of water, it's unclear why everyone is so dirty.

Two sources of fresh water seem to have escaped everyone's notice in the film: solar distillation of sea water and rain water. It's hard to imagine that, with all the technology and gadgetry displayed in the various crafts in the film, the idea of solar distillation has escaped everyone. Also, no one seems to be trying to collect rain water. There's abundant sunlight and clouds are seen, so it must rain at some time, even if the action of the film takes place in an area with little rain, which is possible.

Smokers crouching in the towers would have been visible to the catamaran.

According to the plot the level of water has risen because the ice caps had melted. Water is almost covering top of Everest thus adding plus 8 km to the ocean level before the disaster. This volume of additional water is much greater than in contemporary oceans. And it means that water in the Waterworld planetary ocean should be fresh because ice caps of Earth consist of fresh water. It simply should dilute salty ocean waters to the drinkable condition.

The Smokers are portrayed as pirates, but with their technology and crude oil, they could be the richest (and most powerful) people on the planet if they used that oil to distill sea water into fresh. The Smokers don't care about turning sea water into fresh water. They only care about getting to Dryland.

While the mariner is in the cage someone comes out to talk to him and his foot is clearly shown as webbed. However, when he climbs up on the gate to help open it there is a brief shot of his foot showing a normal foot.

Mariner, when approaching the barter outpost, waits until he is extremely close to the tower before he realizes it is a trap.