Comment respirent les poissons ?

C’est un geste que l’on fait presque sans y penser. Avant un examen, en attendant un résultat médical, ou simplement en espérant que le bus ne soit pas déjà passé : on croise les doigts. Hébergé par Audion. Visitez https://www.audion.fm/fr/privacy-policy pour plus d’informations. 

C’est une de ces expressions un peu à l’ancienne, que vos grands-parents balancent sûrement au détour d’un repas de famille, mais qui fait souvent hausser les sourcils aux plus jeunes. Hébergé par Audion. Visitez https://www.audion.fm/fr/privacy-policy pour plus d’informations. 

How did the first fish get into the ocean? How do fish breathe under water? If you put a fish's head underwater, but not its tail, would it survive? How do fish get diseases? How do fish see underwater without googles? Why do fish swim when they are asleep? Do fish drink water ...

It's true that some sharks breathe most easily when they're swimming, but that doesn't mean they can't find ways to rest. Learn about buccal pumping, ram ventilation, and more in this episode of BrainStuff, based on this article: https://animals.howstuffworks.com/fish/sharks/shar ...  Show more

If there’s one thing that’s generally known about sharks, it’s that they have sharp teeth. But have you heard they have to keep moving to stay alive? Why is that? In this episode we talk to shark scientist Melissa Cristina Marquez about this very question. Do you have a Moment of ...  Show more

‏ستقول لي ولماذا لا تسأل عن السمكة؟ أقول لك: الحوت غير السمكة؛ فجهاز تنفسه يشبه البشر من نواحٍ، كما أنه حين يأكل يفغر فاه، ويندفع في الماء ويبتلع أطنانا من تلك السمكة التي تسأل عنها.حتى وقت قريب، لم يكن العلماء يعرفون كيف تتفادى الحيتان الاختناق، لكنّ نموذجا ثلاثي الأبعاد لفم الح ...  Show more