Why do fish have vertical tail fins and whales have horizontal
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![](https://c02.purpledshub.com/uploads/sites/41/2018/07/GettyImages-113201881-de24fe1.jpg?w=1029&webp=1)
![](https://www.researchgate.net/publication/6590358/figure/fig3/AS:669613444562962@1536659694768/Fig2-Kinematic-and-hydrodynamic-function-of-dorsal-and-anal-fins-during-steady.png)
Kinematic and hydrodynamic function of dorsal and anal fins during
![](https://www.naturalhistorymag.com/htmlsite/0406/images/0406feature5.jpg)
Natural History Magazine
![](https://steemitimages.com/640x0/https://i.imgsafe.org/0109100919.jpg)
Why fish have vertical fins, and dolphins and whales not? — Steemit
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Whale Shark
![](https://i.stack.imgur.com/1YAtH.jpg)
science based - Is it more likely that merfolk would evolve with horizontal or vertical tails? - Worldbuilding Stack Exchange
![](https://evolution.berkeley.edu/wp-content/uploads/2021/08/shark_dolphin_clade2_newtree_answerkey-1024x638.png)
Homology or convergent trait?
![](https://www.savannahnow.com/gcdn/presto/2021/07/22/NSTN/e88221ac-d114-4213-ad5e-b4a7e248cde1-shark1.jpg?crop=416,234,x0,y333&width=416&height=208&format=pjpg&auto=webp)
How to tell the difference between a shark and dolphin by their fins
![](https://i.ytimg.com/vi/QZYJt7Xjuxg/maxresdefault.jpg)
Is It a Surprise? Humpback Whales! – Whales and Dolphins BC
Why do marine mammals sway their tails vertically, while fish sway them horizontally? - Quora
![](https://assets.sussexwildlifetrust.org.uk/rat-brown-gillian-day-march-2018-10-1.jpg)
Tails you win Sussex Wildlife Trust
Are there any particular advantages to fishes' tails being vertical and whales' flukes being horizontal? - Quora
![](https://www.eu.u-tokai.ac.jp/eu_faculty/inada/FlyingFishTokyo.png)
Flying Fish
Why do whales have horizontal tails, while other fish have vertical tails? Is there any aquatic animal that has a combination of them (similar to aircraft empennage)? - Quora
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Ask Dr. Universe: Evolution gave marine mammals horizontal tails
![](https://www.presstelegram.com/wp-content/uploads/2018/11/1201_NWS_TDB-L-GRAYWHALES-1201-1128-80-1.jpg?w=768)
Is It a Surprise? Humpback Whales! – Whales and Dolphins BC
A Floating Forest: Fish Tail Park in Nanchang City
Free Fish Tail Silhouette Clip Art Silhouette clip art, Clip art, Fishtail
Fish Fins Are Teaching Us the Secret to Flexible Robots and New
Buy Mermaid Fish Tail Mold-beautiful Fish Tail Resin Mold-fish
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