{"id":1630,"date":"2014-05-12T14:31:31","date_gmt":"2014-05-12T14:31:31","guid":{"rendered":"http:\/\/www.123fakta.com\/da\/?p=1630"},"modified":"2026-03-19T10:38:28","modified_gmt":"2026-03-19T10:38:28","slug":"tosiasioita-haista","status":"publish","type":"post","link":"https:\/\/www.123fakta.com\/fi\/facts-about-sharks","title":{"rendered":"Faktoja haista"},"content":{"rendered":"<ol>\n<li><strong>Hajuaisti:<\/strong>\u00a0Haiden hajuaisti on eritt\u00e4in ter\u00e4v\u00e4, ja ne voivat haistaa veren kaukaa. Tarkka et\u00e4isyys voi olla 400 metrist\u00e4 2 kilometriin hailajista ja vesiolosuhteista riippuen. 2\/3 hain aivoista on omistettu hajuaistille.<\/li>\n<li><strong>Uppoaminen:<\/strong> Jos hai lakkaa uimasta, se vajoaa pohjaan. Jotkin hailajit kuolevat, jos ne eiv\u00e4t ui, koska niiden el\u00e4m\u00e4 on riippuvainen siit\u00e4, ett\u00e4 vesi virtaa jatkuvasti niiden kidusten l\u00e4pi (mik\u00e4 tapahtuu vain silloin, kun ne liikkuvat veden l\u00e4pi).<\/li>\n<li><strong>400 miljoonaa vuotta:<\/strong>\u00a0Hait ovat olleet olemassa ilman suuria muutoksia viimeiset 400 miljoonaa vuotta - eli ne olivat t\u00e4\u00e4ll\u00e4 jo kauan ennen kuin maapallon <a href=\"https:\/\/www.123fakta.com\/fi\/faktoja-dinosauruksista\/\">dinosaurukset<\/a> saapui<\/li>\n<li><strong>J\u00e4\u00e4karhun sy\u00f6j\u00e4t:<\/strong>\u00a0Gr\u00f6nlanninhai (jota kutsutaan my\u00f6s nimell\u00e4 \"merman\" tai \"Somniosus microcephalus\") ruokailee seuraavasti <a href=\"https:\/\/www.123fakta.com\/fi\/tosiasioita-jaakarhuista\/\">j\u00e4\u00e4karhut<\/a> ja voi el\u00e4\u00e4 jopa 200 vuotta<\/li>\n<li><strong>Tiikerihait:<\/strong>\u00a0Heti kun tiikerihain alkioille kehittyy hampaat, ne hy\u00f6kk\u00e4\u00e4v\u00e4t sisarustensa kimppuun ja sy\u00f6v\u00e4t toisensa (viel\u00e4 \u00e4itins\u00e4 vatsassa). T\u00e4m\u00e4 on v\u00e4ltt\u00e4m\u00e4t\u00f6nt\u00e4, jotta alkiot voivat kasvaa. Koska tiikerihailla on kaksi kohtua, syntyess\u00e4\u00e4n j\u00e4ljelle j\u00e4\u00e4 vain kaksi alkiota.<\/li>\n<li><strong>Kiihdytys:<\/strong>\u00a0Makkohai voi kiihdytt\u00e4\u00e4 nopeammin kuin Porsche...<\/li>\n<li><strong>H\u00e4rk\u00e4hait:<\/strong>\u00a0H\u00e4rk\u00e4hai voi el\u00e4\u00e4 sek\u00e4 suola- ett\u00e4 makeassa vedess\u00e4...<\/li>\n<li><strong>Suurimmat hait:<\/strong>\u00a0Maailman kaksi suurinta haita, valashai ja brugdenhai, ovat vaarattomia planktonin sy\u00f6ji\u00e4.<\/li>\n<li><strong>Pienin hai:<\/strong>\u00a0Maailman pienin hai, k\u00e4\u00e4pi\u00f6hai, on aikuisena vain 15 cm pitk\u00e4.<\/li>\n<li><strong>Hampaat:<\/strong>\u00a0Valkohai voi menett\u00e4\u00e4 jopa 1 000 hammasta vuodessa. Vertailun vuoksi mainittakoon, ett\u00e4 ihmisell\u00e4 kest\u00e4\u00e4 7 vuotta menett\u00e4\u00e4 20 hammasta. Ulos pudonneen hampaan korvaaminen kest\u00e4\u00e4 vain 3 p\u00e4iv\u00e4\u00e4. Hain elinaikana sen leukoihin voi kasvaa jopa 30 000 hammasta.<\/li>\n<\/ol>\n<figure id=\"attachment_7530\" aria-describedby=\"caption-attachment-7530\" style=\"width: 790px\" class=\"wp-caption aligncenter\"><img loading=\"lazy\" decoding=\"async\" class=\"size-full wp-image-7530\" src=\"https:\/\/www.123fakta.com\/wp-content\/uploads\/hajer-fakta-2.jpg\" alt=\"Fakta: Hait tappavat vuosittain paljon v\u00e4hemm\u00e4n ihmisi\u00e4 kuin useimmat luulevat.\" width=\"800\" height=\"600\" srcset=\"https:\/\/www.123fakta.com\/wp-content\/uploads\/hajer-fakta-2.jpg 800w, https:\/\/www.123fakta.com\/wp-content\/uploads\/hajer-fakta-2-300x225.jpg 300w, https:\/\/www.123fakta.com\/wp-content\/uploads\/hajer-fakta-2-768x576.jpg 768w, https:\/\/www.123fakta.com\/wp-content\/uploads\/hajer-fakta-2-16x12.jpg 16w\" sizes=\"auto, (max-width: 800px) 100vw, 800px\" \/><figcaption id=\"caption-attachment-7530\" class=\"wp-caption-text\">Attribuutio: Flickr.com<\/figcaption><\/figure>\n<p style=\"text-align: center;\"><em><strong>Fakta: Hait tappavat 12 ihmist\u00e4 joka vuosi - ihmiset tappavat 11 417 haita joka tunti.<\/strong><\/em><\/p>\n<h2>Tietoa gr\u00f6nlanninhaista<\/h2>\n<ul>\n<li><strong>Ik\u00e4<\/strong>: I\u00a0<a href=\"http:\/\/videnskab.dk\/naturvidenskab\/verdens-aeldste-hvirveldyr-groenlandshaj-blev-op-mod-512-aar-gammel\">vuoden 2016 tutkimus<\/a> Vanhimman elossa olevan gr\u00f6nlanninhain i\u00e4ksi arvioitiin 272-512 vuotta (gr\u00f6nlanninhain ik\u00e4\u00e4 ei voida mitata tarkasti). Gr\u00f6nlanninhaiden pitk\u00e4ik\u00e4isyys tekee niist\u00e4 luultavasti maapallon pisimp\u00e4\u00e4n el\u00e4neit\u00e4 selk\u00e4rankaisia. Ennen Gr\u00f6nlanninhaiden pitk\u00e4n elini\u00e4n l\u00f6ytymist\u00e4 maailman vanhimman selk\u00e4rangattoman enn\u00e4tyksen\u00e4 oli 211-vuotias keulavalas.<\/li>\n<li><strong>Sukupuolten v\u00e4linen kypsyys<\/strong>: Kypsyysik\u00e4: Gr\u00f6nlanninhait tulevat sukukypsiksi noin 100-vuotiaina (naaraat tulevat sukukypsiksi vasta noin 4 metrin ik\u00e4isin\u00e4). Ne ovat yleens\u00e4 sukukypsi\u00e4 noin 150-vuotiaina.<\/li>\n<\/ul>\n<h2>Lis\u00e4\u00e4 tosiasioita haista<\/h2>\n<ul>\n<li><strong>Luuranko:<\/strong>\u00a0Hailla ei ole luita, sill\u00e4 niiden luusto koostuu kokonaan rustosta. Kun hai kuolee, sen ruumis liukenee kokonaan veteen, ja j\u00e4ljelle j\u00e4\u00e4v\u00e4t vain hampaat.<\/li>\n<li><strong>Ruoka:<\/strong>\u00a0T\u00e4ysikasvuinen valkohai voi selviyty\u00e4 3 kuukautta sy\u00f6m\u00e4tt\u00e4.<\/li>\n<li><strong>Lihansy\u00f6j\u00e4t:<\/strong>\u00a0Kasvinsy\u00f6j\u00e4haita ei ole<\/li>\n<li><strong>Ter\u00e4v\u00e4t hampaat:<\/strong>\u00a0Tiikerihain hampaat ovat niin ter\u00e4v\u00e4t, ett\u00e4 ne voivat leikata merikilpikonnan kuoren l\u00e4pi.<\/li>\n<li><strong>Sy\u00f6p\u00e4:<\/strong>\u00a0Tutkijat tutkivat hain rustoa mahdollisten sy\u00f6p\u00e4l\u00e4\u00e4kkeiden l\u00f6yt\u00e4miseksi, koska hait sairastuvat harvoin sy\u00f6p\u00e4\u00e4n.<\/li>\n<li><strong>Laji:<\/strong>\u00a0Maailmassa on ainakin 500 hailajia.<\/li>\n<li><strong>Liikakalastus:<\/strong>\u00a0Liikakalastuksella voi olla vakavia seurauksia haille. Esimerkiksi valashai ei voi lis\u00e4\u00e4nty\u00e4 ennen 30. ik\u00e4vuottaan, ja sen kokonaiselinaika on 60-100 vuotta. Siksi ne eiv\u00e4t pysty lis\u00e4\u00e4ntym\u00e4\u00e4n tarpeeksi nopeasti kompensoidakseen kalastuksen aiheuttamaa kannan v\u00e4henemist\u00e4.<\/li>\n<li><strong>Fobia:<\/strong>\u00a0Galeofobia on haiden pelko. Termi tulee kreikan kielen sanasta \"galeos\", joka tarkoittaa \"koirakala, pieni hai\", ja se oli nimi tietylle hailajille, joilla oli valaan kaltaisia piirteit\u00e4.<\/li>\n<li><strong>Ik\u00e4<\/strong>: Hait el\u00e4v\u00e4t yleens\u00e4 2-3 kertaa niin kauan kuin ne saavuttavat sukukypsyyden. Jos hai saavuttaa sukukypsyyden 70-vuotiaana, se voi el\u00e4\u00e4 noin 140-210-vuotiaaksi.<\/li>\n<li><strong>Kasvu<\/strong>: Toisin kuin nis\u00e4kk\u00e4\u00e4t, jotka pys\u00e4htyv\u00e4t kasvamaan tietyss\u00e4 i\u00e4ss\u00e4, hait - kuten <a href=\"https:\/\/www.123fakta.com\/fi\/faktoja-kaloista\/\">kala<\/a> - jatkaa kasvuaan koko el\u00e4m\u00e4ns\u00e4 ajan.<\/li>\n<\/ul>\n<figure id=\"attachment_7531\" aria-describedby=\"caption-attachment-7531\" style=\"width: 990px\" class=\"wp-caption aligncenter\"><img loading=\"lazy\" decoding=\"async\" class=\"size-full wp-image-7531\" src=\"https:\/\/www.123fakta.com\/wp-content\/uploads\/den-store-hvide-haj-2.jpg\" alt=\"Fakta: Valkohai voi selviyty\u00e4 3 kuukautta ilman ruokaa.\" width=\"1000\" height=\"667\" srcset=\"https:\/\/www.123fakta.com\/wp-content\/uploads\/den-store-hvide-haj-2.jpg 1000w, https:\/\/www.123fakta.com\/wp-content\/uploads\/den-store-hvide-haj-2-300x200.jpg 300w, https:\/\/www.123fakta.com\/wp-content\/uploads\/den-store-hvide-haj-2-768x512.jpg 768w, https:\/\/www.123fakta.com\/wp-content\/uploads\/den-store-hvide-haj-2-18x12.jpg 18w\" sizes=\"auto, (max-width: 1000px) 100vw, 1000px\" \/><figcaption id=\"caption-attachment-7531\" class=\"wp-caption-text\">Attribuutio: Flickr.com<\/figcaption><\/figure>\n<p style=\"text-align: center;\"><em><strong>Fakta: Valkohai voi selviyty\u00e4 jopa 3 kuukautta ilman ruokaa.<\/strong><\/em><\/p>\n<h2>Faktoja haihy\u00f6kk\u00e4yksist\u00e4<\/h2>\n<ul>\n<li><strong>Pure:<\/strong>\u00a0Niiss\u00e4 harvoissa tapauksissa, joissa hait hy\u00f6kk\u00e4\u00e4v\u00e4t ihmisten kimppuun, ne purevat yleens\u00e4 vain kerran. Ne pit\u00e4v\u00e4t uhriaan kiinni yleens\u00e4 vain muutaman sekunnin ajan ennen kuin ne huomaavat, ett\u00e4 kyseess\u00e4 ei olekaan meriel\u00e4in, jonka ne ovat saaneet kiinni.<\/li>\n<li><strong>Hait vastaan ihmiset:<\/strong>\u00a0Hait tappavat 12 ihmist\u00e4 joka vuosi - ihmiset tappavat 11 417 haita joka tunti.<\/li>\n<li><strong>Ihmisen puremat:<\/strong>\u00a0On todenn\u00e4k\u00f6isemp\u00e4\u00e4, ett\u00e4 sinua puree toinen ihminen kuin hai.<\/li>\n<li><strong>Rannikkohy\u00f6kk\u00e4ys:<\/strong>\u00a0Valtaosa haihy\u00f6kk\u00e4yksist\u00e4 tapahtuu muutaman sadan metrin p\u00e4\u00e4ss\u00e4 rannikosta. T\u00e4m\u00e4 johtuu kuitenkin yksinomaan siit\u00e4, ett\u00e4 ihmiset uivat p\u00e4\u00e4asiassa l\u00e4hell\u00e4 rantaa.<\/li>\n<li><strong>Laskuvesi:<\/strong>\u00a0Noin 2\/3 kaikista haihy\u00f6kk\u00e4yksist\u00e4 tapahtuu matalassa vedess\u00e4 (alle 1,8 metrin syvyydess\u00e4).<\/li>\n<li><strong>Todenn\u00e4k\u00f6isyys:<\/strong>\u00a0Kuolet todenn\u00e4k\u00f6isemmin putoavaan kookosp\u00e4hkin\u00e4\u00e4n kuin hain hy\u00f6kk\u00e4ykseen. Kuolet my\u00f6s todenn\u00e4k\u00f6isemmin salamaniskuun tai mehil\u00e4isen pistoihin kuin hain hy\u00f6kk\u00e4ykseen.<\/li>\n<li><strong>Varoitusmerkit:<\/strong>\u00a0Seuraavat ovat merkkej\u00e4 siit\u00e4, ett\u00e4 hai hy\u00f6kk\u00e4\u00e4: se kaartaa selk\u00e4ns\u00e4, laskee rintaev\u00e4ns\u00e4 alas ja ui siksak-kuviona.<\/li>\n<li><strong>Miespuoliset uhrit:<\/strong>\u00a0Vaikka maailman meriss\u00e4 ui l\u00e4hes yht\u00e4 paljon miehi\u00e4 ja naisia, noin 90% kaikista hain uhreista on miehi\u00e4.<\/li>\n<li><strong>Vain harvat lajit hy\u00f6kk\u00e4\u00e4v\u00e4t:<\/strong>\u00a0Vain noin 3% kaikista hailajeista on historiallisesti hy\u00f6k\u00e4nnyt ihmisten kimppuun.<\/li>\n<\/ul>","protected":false},"excerpt":{"rendered":"<p>Hajuaisti: Haiden hajuaisti on eritt\u00e4in ter\u00e4v\u00e4, ja ne voivat haistaa veren kaukaa. Tarkka et\u00e4isyys voi olla 400 metrist\u00e4 2 kilometriin hailajista ja vesiolosuhteista riippuen. 2\/3 hain aivoista on omistettu hajuaistille Uppoaminen: Jos hai lopettaa uinnin, ... <a title=\"Faktoja haista\" class=\"read-more\" href=\"https:\/\/www.123fakta.com\/fi\/facts-about-sharks\" aria-label=\"Lue lis\u00e4\u00e4 aiheesta Faktoja haista\">Lue lis\u00e4\u00e4<\/a><\/p>","protected":false},"author":1,"featured_media":7532,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"cybocfi_hide_featured_image":"","footnotes":""},"categories":[67,74],"tags":[120],"class_list":["post-1630","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-animals","category-aquatic-animals","tag-adsense"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.6 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Facts about sharks and shark attacks - 31 amazing facts<\/title>\n<meta name=\"description\" content=\"Fact: Sharks sink to the bottom if they stop swimming. Some species also die if they stand still. Learn more facts about sharks here.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.123fakta.com\/fi\/tosiasioita-haista\/\" \/>\n<meta property=\"og:locale\" content=\"fi_FI\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Facts about sharks and shark attacks - 31 amazing facts\" \/>\n<meta property=\"og:description\" content=\"Fact: Sharks sink to the bottom if they stop swimming. Some species also die if they stand still. 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