--- title: Sharks by kind, small and strange: walking sharks, wobbegongs, cookiecutters and goblin sharks — a lesson of Mova's school · trees and pragmatics description: «Sharks by kind, small and strange: walking sharks, wobbegongs, cookiecutters and goblin sharks», a lesson of the biology course of Mova's primary school, sentence by sentence with dependency trees and pragmatics. It begins: Not every shark is a big grey hunter like the one in Jaws. --- [Mova](https://md.mova.elamur.ai/free/en/) · [this page in HTML](https://mova.elamur.ai/free/en/corpora/school/biology/311-sharks-by-kind-small-and-strange-walking-sharks-wobbegongs-cookiecutters-and-goblin-sharks/) [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/) / Sharks by kind, small and strange: wal… # Sharks by kind, small and strange: walking sharks, wobbegongs, cookiecutters and goblin sharks Lesson 311 of the biology course of Mova's primary school: 17 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/311-sharks-by-kind-small-and-strange-walking-sharks-wobbegongs-cookiecutters-and-goblin-sharks/). - [0](https://md.mova.elamur.ai/free/en/corpora/school/biology/311-sharks-by-kind-small-and-strange-walking-sharks-wobbegongs-cookiecutters-and-goblin-sharks/0/) — Not every shark is a big grey hunter like the one in Jaws. - [1](https://md.mova.elamur.ai/free/en/corpora/school/biology/311-sharks-by-kind-small-and-strange-walking-sharks-wobbegongs-cookiecutters-and-goblin-sharks/1/) — There are over 500 kinds, and many are small, flat, glowing or very strange. - [2](https://md.mova.elamur.ai/free/en/corpora/school/biology/311-sharks-by-kind-small-and-strange-walking-sharks-wobbegongs-cookiecutters-and-goblin-sharks/2/) — Some walk on their fins across rock pools, some lie on the seabed looking like a frilly carpet, and one tiny shark takes round bites out of whales as if with a cookie cutter. - [3](https://md.mova.elamur.ai/free/en/corpora/school/biology/311-sharks-by-kind-small-and-strange-walking-sharks-wobbegongs-cookiecutters-and-goblin-sharks/3/) — In the deep dark sea live sharks that glow, a pink shark that shoots its jaws out of its face, and a big gentle shark with a huge mouth that nobody knew about until 1976. - [4](https://md.mova.elamur.ai/free/en/corpora/school/biology/311-sharks-by-kind-small-and-strange-walking-sharks-wobbegongs-cookiecutters-and-goblin-sharks/4/) — Picture a beach after a storm: among the seaweed lies a black leathery pouch with curly corners. - [5](https://md.mova.elamur.ai/free/en/corpora/school/biology/311-sharks-by-kind-small-and-strange-walking-sharks-wobbegongs-cookiecutters-and-goblin-sharks/5/) — It is a mermaid's purse, an egg case that once held a baby shark or ray. - [7](https://md.mova.elamur.ai/free/en/corpora/school/biology/311-sharks-by-kind-small-and-strange-walking-sharks-wobbegongs-cookiecutters-and-goblin-sharks/7/) — Walking sharks can survive for hours with very little oxygen when a rock pool gets warm and stale at low tide. - [8](https://md.mova.elamur.ai/free/en/corpora/school/biology/311-sharks-by-kind-small-and-strange-walking-sharks-wobbegongs-cookiecutters-and-goblin-sharks/8/) — Wobbegongs are flat sharks with patterned skin and frilly flaps around the mouth; they lie still on the seabed and snap up fish that come too close. - [9](https://md.mova.elamur.ai/free/en/corpora/school/biology/311-sharks-by-kind-small-and-strange-walking-sharks-wobbegongs-cookiecutters-and-goblin-sharks/9/) — Wobbegongs are calm but will bite if stepped on or poked, and they can hold on tight; divers should look but never touch. - [10](https://md.mova.elamur.ai/free/en/corpora/school/biology/311-sharks-by-kind-small-and-strange-walking-sharks-wobbegongs-cookiecutters-and-goblin-sharks/10/) — The cookiecutter shark is only about 50 centimetres long; it latches on with sucking lips and spins to cut a round plug of flesh out of whales, dolphins, seals and big fish. - [11](https://md.mova.elamur.ai/free/en/corpora/school/biology/311-sharks-by-kind-small-and-strange-walking-sharks-wobbegongs-cookiecutters-and-goblin-sharks/11/) — The cookiecutter's belly glows to hide its shape against the light from above, except for a dark collar; some scientists think the collar lures big hunters close, but this is still argued. - [12](https://md.mova.elamur.ai/free/en/corpora/school/biology/311-sharks-by-kind-small-and-strange-walking-sharks-wobbegongs-cookiecutters-and-goblin-sharks/12/) — The goblin shark of the deep sea is pink because its blood shows through its thin skin, and it can fling its jaws forward out of its face to grab prey. - [13](https://md.mova.elamur.ai/free/en/corpora/school/biology/311-sharks-by-kind-small-and-strange-walking-sharks-wobbegongs-cookiecutters-and-goblin-sharks/13/) — The goblin shark's family goes back over 100 million years, so it is sometimes called a living fossil, and few people have seen one alive. - [14](https://md.mova.elamur.ai/free/en/corpora/school/biology/311-sharks-by-kind-small-and-strange-walking-sharks-wobbegongs-cookiecutters-and-goblin-sharks/14/) — The megamouth shark was first found in 1976, when one got tangled in a ship's sea anchor off Hawaii; it filters tiny shrimp with its huge mouth, and only a few hundred have ever been recorded. - [15](https://md.mova.elamur.ai/free/en/corpora/school/biology/311-sharks-by-kind-small-and-strange-walking-sharks-wobbegongs-cookiecutters-and-goblin-sharks/15/) — The dwarf lanternshark of the Caribbean deep is one of the smallest sharks, about 20 centimetres long, shorter than a 30-centimetre school ruler; it glows. - [16](https://md.mova.elamur.ai/free/en/corpora/school/biology/311-sharks-by-kind-small-and-strange-walking-sharks-wobbegongs-cookiecutters-and-goblin-sharks/16/) — Swell sharks gulp water to puff themselves up and wedge into rock cracks so a predator cannot pull them out. - [17](https://md.mova.elamur.ai/free/en/corpora/school/biology/311-sharks-by-kind-small-and-strange-walking-sharks-wobbegongs-cookiecutters-and-goblin-sharks/17/) — A mermaid's purse is the egg case of a catshark, skate or ray; curly tendrils at its four corners hold it to seaweed while the baby grows for months. - ← previous: [Sharks by kind: great white, tiger, bull and hammerhead](https://md.mova.elamur.ai/free/en/corpora/school/biology/310-sharks-by-kind-great-white-tiger-bull-and-hammerhead/) - next →: [Whales by kind, the baleen whales: blue, fin, humpback, grey, right and minke](https://md.mova.elamur.ai/free/en/corpora/school/biology/312-whales-by-kind-the-baleen-whales-blue-fin-humpback-grey-right-and-minke/) - ↑ back to [Biology](https://md.mova.elamur.ai/free/en/corpora/school/biology/)