New GHOST SHARK 種類 with a sex 組織／臓器 on its '大規模な 長，率いる' is discovered more than 2,000 feet below the surface 近づく Thailand

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The 'ghost shark' is so rarely seen in the wild, that spotting one is almost like seeing a ghost.

Yet a team of scientists not only 秘かに調査するd a never-before-seen 種類 of the elusive fish, they also 運ぶ／漁獲高d it up to the surface from nearly half a mile 負かす／撃墜する in the Andaman Sea off the coast of Thailand, 近づく the 訴える手段／行楽地 目的地 Phuket.

The newly 述べるd 見本／標本 has 黒人／ボイコット, feathery fins, a tail as sharp as a stinger, and gigantic green 注目する，もくろむs nearly one-third the length of its 長，率いる.

Genetic 実験（する）ing 明らかにする／漏らすd that it was a new 種類, bringing the world's number of known ghost shark 種類 up from 53 to 54.

This newly identified 種類 of 'ghost shark' is 276mm long (10.9 インチs) and has 注目する，もくろむs that （不足などを）補う almo st one-third of its 長，率いる length.

An international team of scientists collected it during a 深い-sea 探検隊／遠征隊 on に代わって of the Thailand Department of 漁業s and the Food and 農業 Organization of the 国際連合.

READ MORE: The strange sex lives of ghost sharks

Males have retractable 麻薬中毒の sex 組織／臓器s on their 長，率いる, and 女性（の）s can 蓄える／店 sperm for years.?

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They caught it in a trawling 逮捕する dragged along the seafloor by a boat, during an 探検隊／遠征隊 in 2018, when they also caught two other 関係のある?種類.

Their depth 測定s 示すd it was between 772 and 775 メーターs 負かす／撃墜する when it was caught (2,533 to 2,543 feet), nearly half a mile.

When they 最初 診察するd it, the team misidentified the 11-インチ-long fish as a known 種類 of ghost shark, the longspine chimaera -?Chimaera aff. macrospina.

But after closer examination, 含むing genetic 実験（する）ing, they have now 結論するd that it is in fact a new 種類: Chimaera Supapae, 指名するd for fish 研究員 Supap Monkolprasit.

Monkolprasit was a Thai ichthyologist who 献身的な her life to 熟考する／考慮するing cartilaginous fish like ghost sharks until she died in 2013.

Even though the creature is called a 'shark,' it is not in the same group as the 巨大（な） apex predator.?

This ghost shark belongs to the order of fish called Chimaera, so 指名するd because its members often look like they have been sewn together from the parts of other fish - like the mythical Greek beast that was part lion, part goat, and part dragon.

Genetic 実験（する）ing helped 明らかにする／漏らす the fact that scientists were 現実に looking at a new 種類 of ghost shark.

見本s from the 見本／標本 were sequenced, then compared to genetic sequences from eight other ghost shark 種類, 含むing five that lived in the 地域.

It was a difficult 仕事, because the D NA of the 深い-sea fish had begun to degrade after scientists had 運ぶ／漁獲高d it to the surface.

These tentacula belong to a 種類 of ghost shark 親族 called Neoharriotta pinnata. 隠すd 近づく their pectoral fins, the spiny 組織／臓器s are used to 持つ／拘留する a 女性（の） in place during mating.

Members of the ghost shark order have been 設立する that are as much as four feet long, but scientists 嫌疑者，容疑者／疑う they can grow up to six in some 事例／患者s

But they got enough, and when they compared over 1,000 base pairs of デオキシリボ核酸 to the other sharks' sequences, it was 明確に not a match.

Based on their examinations, they 決定するd that it is an immature male.?

Now that they identified it, the scientists can 述べる how it's different from other ghost shark 種類: '大規模な 長，率いる with a short snout,' oval 注目する，もくろむs that （不足などを）補う 32.2 パーセント of its 長，率いる length, and 'deciduous 肌.'

Interestingly, deciduous 肌 that flakes off easily has been 発展させるd in prey 種類 like mackerel to help them slip out of the しっかり掴む of predators.

So perhaps the new ghost fish has some larger 深い-sea predators.

顕著に, male chimaeras have 性の 組織／臓器s on 最高の，を越す of their 長，率いる - a structure called a tentaculum.?

This, along with two others 隠すd 近づく their pectoral fins, is used to 持つ／拘留する a 女性（の） in place during mating.?

Because they often live around 深い-sea 大陸の slopes and ocean 山の尾根s, ghost sharks can be caught by 底（に届く） trawling.

The darkest depths of the ocean 持つ／拘留する many secrets, and the more scientists 調査する, the more they realize how much they have yet to discover.?

'Evolutionarily, these chimaeras are の中で some of the oldest lineages of fishes with the lineage going 支援する 300-400 million years,' lead 熟考する／考慮する author David Elbert, program director of the 太平洋の Shark 研究 中心 at San Jose 明言する／公表する University in California, told LiveScience.

'The 発見 of new 種類 like this chimaera tells us how little we know about the 海洋 環境 and how much is still to be 調査するd.'?

The team published its findings in the 定期刊行物 Raffles 公式発表 of Zoology.?