Tangle Kelp

The Tangle Kelp is a single use, instantly armed aquatic trap, dragging any zombie unlucky enough to cross its path into the watery depths of the Pool.

Usage
Place a Tangle Kelp in water and does not require a Lily Pad.

Suburban Almanac Entry
Tangle Kelp

Tangle Kelp are aquatic plants that pull the first zombie that nears them underwater.

Damage: massive

Usage: single use, on contact

Must be planted in water

"I'm totally invisible," Tangle Kelp thinks to himself. "I'll hide here just below the surface and nobody will see me." His friends tell him they can see him perfectly well, but he'll never change.

Cost: 25

Recharge: slow

Strategy
With such a low cost, Tangle Kelp makes an ideal early defense in pool lanes. Just don't get lulled into failing to build up your pool defenses, because the slow recharge prevents Tangle Kelp from being readily re-used.

They also take down Dolphin Rider Zombies whole instead of being jumped over, so these may be more useful than just placing a Lily Pad in front of it. Furthermore, they are useful in defeating Snorkel Zombies, as they can drown them without having them come up. However, their slow recharge may prevent them from drowning every Dolphin Rider Zombie or Snorkel Zombie, so it's wise to prepare backup plans for them just in case. Squash makes a good backup plan as it is an AoE All-terrain Tangle Kelp.

Advantages and Disadvantages
Advantages Disadvantages
 * Low cost.
 * Deals 144 normal shots of damage (can kill a Tall-nut Zombie in one hit) more than other instant kills which only deal 90 normal shots.
 * Doesn't need a Lily Pad to plant.
 * Can even kill Dolphin Rider Zombies when he still has his dolphin intact.
 * Can also drown Snorkel Zombies without requiring them to surface.
 * Slow recharge to prevent it from being used repeatedly.
 * Can only be planted in water.
 * Cannot have a Pumpkin around them.

Trivia

 * The Tangle Kelp is the only plant besides the Tall-nut that the Dolphin Rider Zombie can't jump over.
 * It is similar to the Pokemon Tangela.
 * The Tangle Kelp and the Coffee Bean are the only plants that zombies will never attempt to eat.
 * Zombies will attempt to eat Instant Kills such as Cherry Bombs but they will always detonate before they get eaten.
 * Along with the Sea-shroom, the Tangle Kelp is one of two offensive plants that don't require Lily Pads to be in the Pool.
 * The zombie that was pulled underwater by a Tangle Kelp does not die because the Snorkel Zombie's Almanac Entry states that Zombies do not need to breathe.
 * Therefore, it is unknown what the Tangle Kelp does to the zombie it pulls down.
 * Maybe they just tangle them until they're squeezed to death.
 * The Tangle Kelp, the Sea-shroom, the Grave Buster and the Cob Cannon are the only Plants that cannot have Pumpkins placed around them, excluding the Pumpkin itself.
 * The Tangle Kelp, the Chomper, the Potato Mine, the Hypno-shroom, and the Squash are the only Instant Kills that are used on contact with the enemy.
 * The Tangle Kelp, the Chomper and the Squash are the only instant kills that do not blow up.
 * On the Plants vs. Zombies website, the Tangle Kelp is seen on land, other than in the water.
 * In the Almanac Entry of Tangle Kelp, it says that it thinks Zombies and plants cannot see him. This may be true due to the fact that Zombies never eat him, and Dolphin Rider Zombies will keep on riding past, when they would normally jump over.
 * Tangle Kelp is one of the twelve plants that appear in the seed selection screen after you get the Grave Buster on the online version. The others are: Ice-shroom, Lily Pad, Potato Mine, Threepeater, Doom-shroom, Jalapeno, Spikeweed, Torchwood, Tall-nut, Cactus and Blover.
 * Tangle Kelp (not including the Imitater Tangle Kelp while transforming), Spikeweed, and Spikerock are the only plants that can't be eaten.
 * Tangle Kelp is basically the aquatic version of Potato Mine except it doesn't need time to arm and is not AoE. However it costs the same amount of Sun.
 * In Zombotany 2, one Tangle Kelp can kill a Tall-nut Zombie.
 * Tangle_Kelp.jpg this fact, it must do at least 144 peas-of-damage to zombies. That way, if we would have pool Gargantuars, they would almost be drowned almost at the same time, or would have be killed at after few seconds.Badge-category-5.png
 * Though it's also possible that a Gargantuar would resist being tangled and the Tangle Kelp would just do minor amounts of damage to the Gargantuar, just like the Chomper.
 * When tangling a Dolphin Rider Zombie, you can actually see some leftover space where the zombie is suppose to be tangled. This is probably because the Dolphin Rider Zombie is smaller than a normal zombie.
 * An Squash on a lily pad is the same as a Tangle Kelp but it will cost 75 sun (lily pad = 25 + Squash = 50 = 75).