يكتب فيه 1500 كلمة دون حشو
https://animaldiversity.org/accounts/Holothuroidea/
https://www.britannica.com/animal/sea-cucumber
http://www.fao.org/3/i1918e/i1918e.pdf
من فقرة (Behavior)
https://www.worldatlas.com/articles/sea-cucumber-facts-animals-of-the-oceans.html
https://animaldiversity.org/accounts/Holothuroidea/
https://www.nationalgeographic.com/animals/invertebrates/group/sea-cucumbers/
https://www.researchgate.net/publication/311234596_Ecological_Roles_of_Exploited_Sea_Cucumbers
https://animaldiversity.org/accounts/Holothuroidea/
شرح دورة حياة خيار البحر من المرجع:
http://bioweb.uwlax.edu/bio203/s2008/hui_ka/04Life_Cycle.html
https://spccfpstore1.blob.core.windows.net/digitallibrary-docs/files/b5/b5d46a372b1fc041e1af47e5ea36609f.pdf?sv=2015-12-11&sr=b&sig=UH4Bl3kJmwjwl%2FSayWJOb198gW39%2BxJ%2BBkaGfAsEy4U%3D&se=2020-03-14T09%3A44%3A26Z&sp=r&rscc=public%2C%20max-age%3D864000%2C%20max-stale%3D86400&rsct=application%2Fpdf&rscd=inline%3B%20filename%3D%22BDM33_30_Kumara.pdf%22
https://spccfpstore1.blob.core.windows.net/digitallibrary-docs/files/b5/b5d46a372b1fc041e1af47e5ea36609f.pdf?sv=2015-12-11&sr=b&sig=UH4Bl3kJmwjwl%2FSayWJOb198gW39%2BxJ%2BBkaGfAsEy4U%3D&se=2020-03-14T09%3A44%3A26Z&sp=r&rscc=public%2C%20max-age%3D864000%2C%20max-stale%3D86400&rsct=application%2Fpdf&rscd=inline%3B%20filename%3D%22BDM33_30_Kumara.pdf%22
http://www.okking.ca/blog-types-of-sea-cucumbers/
http://www.okking.ca/blog-types-of-sea-cucumbers/
http://www.adfg.alaska.gov/index.cfm%3Fadfg=redseacucumber.main
http://www.fao.org/in-action/globefish/fishery-information/resource-detail/en/c/1113389/
http://www.okking.ca/blog-types-of-sea-cucumbers/
https://www.livestrong.com/article/446427-how-do-i-cook-sea-cucumber
https://www.researchgate.net/publication/281276391_Effects_of_Drying_Methods_on_the_Quality_of_Dried_Sea_Cucumbers_from_Sabah_-_A_Review
https://www.aciar.gov.au/node/12126
(ملاحظة عند الضغط على الرابط يتوجب عليك تحميل الكتاب بالنقر على تنزيل)، لأن الرابط عد التحميل لا يعمل.
https://www.thoughtco.com/surprising-facts-about-sea-cucumbers-2291852
الفقرة الثانية والثالثة:
http://legacy.earlham.edu/~beirnlu/seacucumber.htm