Cetacea (/ s ɪ ˈ t eɪ ʃ ə /; from Latin cetus ' whale ', from Ancient Greek κῆτος ' huge fish, sea monster ') [3] is an infraorder of aquatic mammals belonging to the order Artiodactyla that …

2025年1月30日 · cetacean, (order Cetacea), any member of an entirely aquatic group of mammals commonly known as whales, dolphins, and porpoises. The ancient Greeks …

鲸目（学名：Cetacea）是哺乳纲下设的一个传统分类单元，包含现存约90种体态似鱼、皮肤裸露的水生哺乳动物和它们已灭绝的早期亲族，统称 鲸类 或 鲸豚类，习惯上体型大者称鲸（ …

鲸下目（学名：Cetacea）旧称鲸目，是偶蹄目的一个演化支，包含现存约90种体态似鱼、皮肤裸露的水生哺乳动物和它们已灭绝的早期亲族，统称鲸类或鲸豚类，习惯上体型大者称鲸（ …

Read about Cetacea (dolphins, porpoises, and whales) on the Animal Diversity Web.

Order Cetacea (whales, dolphins, and porpoises) 81 species in 2 suborders. Aquatic mammals with forelimbs modified into flippers, hind limbs lacking; pelvic girdle vestigial and not attached …

Marine mammals in the cetacean family include whales, dolphins and porpoises. These animals are completely aquatic, meaning they spend all of their time in the ocean and cannot survive …

3 天之前 · The Cetacea (whales, dolphins and porpoises) currently include 90 species that inhabit the world's oceans, lakes and rivers. Some are cosmopolitan, occurring in marine waters from …

For example, developments in genetics and satellite tagging have recently led scientists to question long-held views on the gray whale population structure in the North Pacific. …

2023年8月2日 · A cetacean is a member of the infraorder Cetacea – a group of marine mammals that includes whales, dolphins, and porpoises. There are approximately 90 species of …