--- title: Mangroves: trees in salt water, mudskippers, archerfish and swimming tigers — a lesson of Mova's school · trees and pragmatics description: «Mangroves: trees in salt water, mudskippers, archerfish and swimming tigers», a lesson of the biology course of Mova's primary school, sentence by sentence with dependency trees and pragmatics. It begins: Most trees die if you pour salty sea water on their roots, but mangroves grow with their feet --- [Mova](https://md.mova.elamur.ai/free/en/) · [this page in HTML](https://mova.elamur.ai/free/en/corpora/school/biology/178-mangroves-trees-in-salt-water-mudskippers-archerfish-and-swimming-tigers/) [home](https://md.mova.elamur.ai/free/en/) / [corpora](https://md.mova.elamur.ai/free/en/corpora/) / [school](https://md.mova.elamur.ai/free/en/corpora/school/) / [Biology](https://md.mova.elamur.ai/free/en/corpora/school/biology/) / Mangroves: trees in salt water, mudski… # Mangroves: trees in salt water, mudskippers, archerfish and swimming tigers Lesson 178 of the biology course of Mova's primary school: 14 sentences, each with its syntax tree and pragmatics. The lessons are written for Mova, and their agreed trees are part of Mova corpus 0.4 (CC BY-SA 4.0). How Mova does on its tests: [the lesson at school](https://md.mova.elamur.ai/free/en/school-run/biology/178-mangroves-trees-in-salt-water-mudskippers-archerfish-and-swimming-tigers/). - [0](https://md.mova.elamur.ai/free/en/corpora/school/biology/178-mangroves-trees-in-salt-water-mudskippers-archerfish-and-swimming-tigers/0/) — Most trees die if you pour salty sea water on their roots, but mangroves grow with their feet in it, along warm tropical coasts where the tide comes in and out twice a day. - [1](https://md.mova.elamur.ai/free/en/corpora/school/biology/178-mangroves-trees-in-salt-water-mudskippers-archerfish-and-swimming-tigers/1/) — They stand on stilt roots like a table on long legs, and some poke little pencil-like breathing roots up out of the mud, because the sticky mud below has almost no air. - [2](https://md.mova.elamur.ai/free/en/corpora/school/biology/178-mangroves-trees-in-salt-water-mudskippers-archerfish-and-swimming-tigers/2/) — Among those roots live fish that walk on mud, fish that shoot down insects with a squirt of water, crabs waving one giant claw, and in the biggest mangrove forest of all, tigers that swim from island to island. - [3](https://md.mova.elamur.ai/free/en/corpora/school/biology/178-mangroves-trees-in-salt-water-mudskippers-archerfish-and-swimming-tigers/3/) — Mangroves are also a nursery for young fish and a wall against storms: their tangled roots break the waves and hold the soil, like a sponge and a fence in one. - [4](https://md.mova.elamur.ai/free/en/corpora/school/biology/178-mangroves-trees-in-salt-water-mudskippers-archerfish-and-swimming-tigers/4/) — Mangroves are trees that grow in salty water along tropical coasts, and some push salt out through their leaves, where you can see salt crystals. - [5](https://md.mova.elamur.ai/free/en/corpora/school/biology/178-mangroves-trees-in-salt-water-mudskippers-archerfish-and-swimming-tigers/5/) — Stilt roots hold mangroves up in soft mud and also take in some air, and some mangroves have snorkel-like roots called pneumatophores that stick up and take in air, because the mud has little oxygen. - [6](https://md.mova.elamur.ai/free/en/corpora/school/biology/178-mangroves-trees-in-salt-water-mudskippers-archerfish-and-swimming-tigers/6/) — Mudskippers are fish that spend much of their time out of water; they keep water in their gill chambers and breathe through their skin, and males jump high to show off and defend their patch of mud. - [7](https://md.mova.elamur.ai/free/en/corpora/school/biology/178-mangroves-trees-in-salt-water-mudskippers-archerfish-and-swimming-tigers/7/) — Archerfish shoot jets of water to knock insects into the water, and they aim correctly even though water bends light and makes things look in a different place. - [8](https://md.mova.elamur.ai/free/en/corpora/school/biology/178-mangroves-trees-in-salt-water-mudskippers-archerfish-and-swimming-tigers/8/) — Male fiddler crabs wave one giant claw to attract females and warn rivals, and they eat with the small claw because the big one is too large. - [9](https://md.mova.elamur.ai/free/en/corpora/school/biology/178-mangroves-trees-in-salt-water-mudskippers-archerfish-and-swimming-tigers/9/) — The Sundarbans of India and Bangladesh is the biggest mangrove forest in the world, and its Bengal tigers swim between islands and eat fish, crabs and deer. - [10](https://md.mova.elamur.ai/free/en/corpora/school/biology/178-mangroves-trees-in-salt-water-mudskippers-archerfish-and-swimming-tigers/10/) — Saltwater crocodiles are the largest living reptiles, live in both salt and fresh water, swim far out to sea, and are the most dangerous crocodiles for people. - [11](https://md.mova.elamur.ai/free/en/corpora/school/biology/178-mangroves-trees-in-salt-water-mudskippers-archerfish-and-swimming-tigers/11/) — Mangrove seeds sprout while still on the tree, drop as long spikes, and can float for months until they reach mud and grow roots. - [12](https://md.mova.elamur.ai/free/en/corpora/school/biology/178-mangroves-trees-in-salt-water-mudskippers-archerfish-and-swimming-tigers/12/) — Mangrove roots break waves and hold the soil, and after the 2004 tsunami, places with mangroves often had less damage. - [13](https://md.mova.elamur.ai/free/en/corpora/school/biology/178-mangroves-trees-in-salt-water-mudskippers-archerfish-and-swimming-tigers/13/) — Many young reef fish grow up safely among mangrove roots, so where mangroves are cut down, some reefs have fewer fish. - ← previous: [Vents and trenches: tubeworms, iron snails, the Challenger Deep and life without sunlight](https://md.mova.elamur.ai/free/en/corpora/school/biology/177-vents-and-trenches-tubeworms-iron-snails-the-challenger-deep-and-life-without-sunlight/) - next →: [Caves: bat clouds, blind fish, the olm, glowworms and a sealed cave](https://md.mova.elamur.ai/free/en/corpora/school/biology/179-caves-bat-clouds-blind-fish-the-olm-glowworms-and-a-sealed-cave/) - ↑ back to [Biology](https://md.mova.elamur.ai/free/en/corpora/school/biology/)