Valhajen \u00e4r en av v\u00e4rldens mildaste j\u00e4ttar. Rhincodon typus \u00e4r l\u00e5ngsamt simmande filtermatare och innehar f\u00f6r n\u00e4rvarande rekordet f\u00f6r den st\u00f6rsta fiskarten i hela v\u00e4rlden. Valhajar kan bli otroligt l\u00e5nga, upp till 6 meter, och kan v\u00e4ga upp till 20 ton. Valhajens skr\u00e4mmande storlek \u00e4r skr\u00e4mmande, men dess diet best\u00e5r fr\u00e4mst av plankton. Till skillnad fr\u00e5n de flesta av sina fruktade kusiner anv\u00e4nder valhajar en metod som kallas filtermatning f\u00f6r att f\u00e5nga sitt byte. De simmar med munnen vid\u00f6ppen (n\u00e4stan en meter!) f\u00f6r att f\u00e5nga stora m\u00e4ngder av sina sm\u00e5 byten. Valhajen \u00e4r bara en av tre hajarter som filtrerar sig.<\/p>\n
Valhajen har ett platt huvud med en trubbig nos och en massiv mun. De \u00e4r l\u00e4tta att identifiera p\u00e5 grund av sin otroliga storlek och sin f\u00e4rg. Valhajens rygg och sidor \u00e4r gr\u00e5 eller bruna med vit buk. De \u00e4r dock k\u00e4nda f\u00f6r sina vita fl\u00e4ckar och ljusa vertikala och horisontella r\u00e4nder l\u00e4ngs ryggen.<\/p>\n
<\/p>\n
Dessa marina monster lever i tropiska och varmt tempererade hav. De simmar i allm\u00e4nhet ensamma i \u00f6ppna hav, \u00e4ven om de tenderar att samlas i omr\u00e5den d\u00e4r det finns gott om plankton eller andra bytesdjur. Detta g\u00f6r dem till en utm\u00e4rkt turistattraktion, eftersom de ofta \u00e4r s\u00e5 milda att man kan simma bredvid dem utan risk. Omr\u00e5den som Oslob i Cebu \u00e4r mycket popul\u00e4ra p\u00e5 grund av den h\u00f6ga t\u00e4theten av valhajar som simmar f\u00f6rbi deras str\u00e4nder. Detta har dock nyligen visat sig vara skadligt f\u00f6r arten.<\/p>\n
Den uppm\u00e4rksamhet och kontakt som valhajen har f\u00e5tt har f\u00f6rst\u00f6rt vandringsm\u00f6nstren och kraftigt \u00f6kat t\u00e4theten av valhajar i ett mycket lokalt omr\u00e5de. Om de som vill fr\u00e4mja turistindustrin har en stabil f\u00f6dok\u00e4lla tenderar valhajarna att stanna inom ett visst omr\u00e5de i st\u00e4llet f\u00f6r att str\u00f6va omkring i de vidstr\u00e4ckta haven. N\u00e4rheten till stora b\u00e5tar, och d\u00e4rmed propellrar, har lett till en h\u00f6g d\u00f6dlighet hos den milda j\u00e4tten. IUCN har listat den som ”s\u00e5rbar” och naturv\u00e5rdare och milj\u00f6forskare har kr\u00e4vt att valhajen ska behandlas b\u00e4ttre.<\/p>\n
Trots att valhajen har f\u00e5tt mycket uppm\u00e4rksamhet av turisterna vet man f\u00f6rv\u00e5nansv\u00e4rt lite om deras parnings- och valpningsm\u00f6nster. Det \u00e4r f\u00f6rst p\u00e5 senare \u00e5r som mer forskning har bedrivits om dem.
\nH\u00e4r \u00e4r ett par intressanta fakta att avsluta med: i Filippinerna \u00e4r valhajen k\u00e4nd som butanding. I Vietnam v\u00f6rdas valhajen som en gudom som kallas C\u00e1 \u00d4ng, vilket bokstavligen betyder ”Sir Fish”.<\/p>\n","protected":false},"excerpt":{"rendered":"
Valhajen \u00e4r en av v\u00e4rldens mildaste j\u00e4ttar. Rhincodon typus \u00e4r l\u00e5ngsamt simmande filtermatare och innehar f\u00f6r n\u00e4rvarande rekordet f\u00f6r den st\u00f6rsta fiskarten i hela v\u00e4rlden. Valhajar kan bli otroligt l\u00e5nga, upp till 6 meter, och kan v\u00e4ga upp till 20 ton. Valhajens skr\u00e4mmande storlek \u00e4r skr\u00e4mmande, men dess diet best\u00e5r fr\u00e4mst av plankton. Till skillnad […]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"site-sidebar-layout":"default","site-content-layout":"","ast-site-content-layout":"default","site-content-style":"default","site-sidebar-style":"default","ast-global-header-display":"","ast-banner-title-visibility":"","ast-main-header-display":"","ast-hfb-above-header-display":"","ast-hfb-below-header-display":"","ast-hfb-mobile-header-display":"","site-post-title":"","ast-breadcrumbs-content":"","ast-featured-img":"","footer-sml-layout":"","ast-disable-related-posts":"","theme-transparent-header-meta":"","adv-header-id-meta":"","stick-header-meta":"","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":"","astra-migrate-meta-layouts":"default","ast-page-background-enabled":"default","ast-page-background-meta":{"desktop":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"ast-content-background-meta":{"desktop":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"footnotes":""},"categories":[284],"tags":[],"class_list":["post-74981","post","type-post","status-publish","format-standard","hentry","category-utbildning"],"_links":{"self":[{"href":"https:\/\/www.oslobwhalesharks.com\/sv\/wp-json\/wp\/v2\/posts\/74981","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.oslobwhalesharks.com\/sv\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.oslobwhalesharks.com\/sv\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.oslobwhalesharks.com\/sv\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.oslobwhalesharks.com\/sv\/wp-json\/wp\/v2\/comments?post=74981"}],"version-history":[{"count":0,"href":"https:\/\/www.oslobwhalesharks.com\/sv\/wp-json\/wp\/v2\/posts\/74981\/revisions"}],"wp:attachment":[{"href":"https:\/\/www.oslobwhalesharks.com\/sv\/wp-json\/wp\/v2\/media?parent=74981"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.oslobwhalesharks.com\/sv\/wp-json\/wp\/v2\/categories?post=74981"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.oslobwhalesharks.com\/sv\/wp-json\/wp\/v2\/tags?post=74981"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}