Cosma / Communication / Knowledge / Realm / Terrestrial / Life /Animal / Mammal / Dolphin
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Introduction1
How smart are dolphins? (Lori Marino, TED-Ed)
TED-Ed (YouTube Channel)
Dictionary
dolphin : any of various small marine toothed whales (family Delphinidae) with the snout more or less elongated into a beak and the neck vertebrae partially fused
Note: While not closely related, dolphins and porpoises share a physical resemblance that often leads to misidentification. Dolphins typically have cone-shaped teeth, curved dorsal fins, and elongated beaks with large mouths, while porpoises have flat, spade-shaped teeth, triangular dorsal fins, and shortened beaks with smaller mouths. — Merriam-Webster See also OneLook
Encyclopedia
Dolphins are a widely distributed and diverse group of aquatic mammals. They are an informal grouping within the order Cetacea, excluding whales and porpoises, so to zoologists the grouping is paraphyletic. The dolphins comprise the extant families Delphinidae (the oceanic dolphins), Platanistidae (the Indian river dolphins), Iniidae (the new world river dolphins), and Pontoporiidae (the brackish dolphins), and the extinct Lipotidae (baiji or Chinese river dolphin). There are 40 extant species of dolphins. Dolphins, alongside other cetaceans, belong to the clade Cetartiodactyla with even-toed ungulates. Their closest living relatives are the hippopotamuses, having diverged about 40 million years ago. — Wikipedia
Dolphin (Encyclopædia Britannica)
Cetacean Fact Sheets (American Cetacean Society)
Dolphins (One Zoom)
Dolphin (WolframAlpha)
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Adventures
Explore related posts on Cosma …
- Watchable Whales - A popular tourist activity in Boston is whale watching (Trip Advisor). That is because it’s only a short 25 mile trip out to Stellwagen Bank National Marine Sanctuary (Wikipedia). Stellwagen Bank hosts several different species of large whales, including humpbacks, finbacks, minkes, pilot whales and right whales. If you’ve never seen a whale in person, … Continue reading Watchable Whales
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Inspiration
Note: This is a 360° Video — press and hold to explore it!
Wildlife Protection Solutions (YouTube Channel)
Wildlife Protection Solutions (Official Website)
Talks about Dolphins (TED: Ideas Worth Spreading)
Articles about Dolphins (Big Think)
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Innovation
Science
Cetology is the branch of marine mammal science that studies the approximately eighty species of whales, dolphins, and porpoises in the scientific order Cetacea. — Wikipedia
Solidifying the Dolphin Family Tree (Devin Reese, Smithsonian Ocean)
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Preservation
Conservation
Conservation (American Cetacean Society)
History
Natural History of Dolphins (Dolphin Research Center)
Dolphin (World History Encyclopedia)
Library
DDC: 599.53 Dolphins (Library Thing)
Subject: Dolphins (Library Thing)
Subject: Dolphins (Open Library)
LCC: QL 737.C432 TERM (UPenn Online Books)
Subject: Dolphins (UPenn Online Books)
LCC: QL 737.C432 TERM (Library of Congress)
Subject: Dolphins (Library of Congress)
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Participation
Education
Cetacean Curriculum (American Cetacean Society)
MERLOT: Multimedia Educational Resource for Learning and Online Teaching
OER Commons: Open Educational Resources
Community
Occupation
Cetologists , or those who practice cetology, seek to understand and explain cetacean evolution, distribution, morphology, behavior, community dynamics, and other topics. — Wikipedia
How to Become a Marine Mammal Scientist (The Society for Marine Mammology)
Careers in Mammalogy (American Society of Mammalogists)
Organization
American Society of Mammalogists
The Mammal Society
News
Marine Mammal Science (Society for Marine Mammalogy)
Mammal Review (The Mammal Society)
Journal of Mammalogy (American Society of Mammalogists)
Mammalian Species (American Society of Mammalogists)
TERM (EurekaAlert, American Association for the Advancement of Science)
Dolphins (bioRxiv: Preprint Server for Biology, Cold Spring Harbor Laboratory)
Dolphins (JSTOR)
Dolphins (Science Daily)
Dolphins (Science News)
Dolphins (Phys.org)
Dolphins (NPR Archives)
Government
Dolphins & Porpoises (Northeast Fisheries Science Center, NOAA Fisheries)
More News …
Dolphins and Whales News -- ScienceDaily Whales and dolphins. Whale songs, beaching, endangered status -- current research news on all cetaceans.
- 324-million-year-old fossil reveals how insects...on August 27, 2026 at 7:22 am
Ancient fossils suggest insects conquered land through a long amphibious phase rather than making an abrupt jump from water to dry ground. A newly identified 324-million-year-old species still carried paddle-like abdominal limbs, revealing an evolutionary bridge between aquatic ancestors and modern six-legged insects.
- Forget the sperm race: Fertilization may depend...on August 6, 2026 at 6:25 am
Millions of sperm do not always compete alone—some species send them into action as coordinated teams. A sweeping evolutionary study found that this cooperation is widespread among arthropods and has repeatedly emerged and vanished over hundreds of millions of years. The discovery challenges the classic “fastest sperm wins” story and could influence future fertility research and pest-control strategies.
- Orcas filmed smashing giant sunfish into...on July 23, 2026 at 1:55 pm
Researchers in the Gulf of California have documented a dramatic orca behavior never described before. In two separate encounters, one orca gripped a dead sunfish by the fin while another charged into it at high speed, blasting the carcass into thousands of pieces.
- Scientists found mystery bacteria inside one of...on July 21, 2026 at 5:10 am
Scientists studying decades of pygmy sperm whale strandings have uncovered three previously unknown types of Helicobacter bacteria hiding in the animals’ stomachs. All four infected whales showed serious digestive damage, including inflammation, ulcers, scarring, and parasite infestations, although the bacteria were not confirmed as the cause of death.
- On the brink of extinction, the vaquita gets a...on June 17, 2026 at 12:01 pm
Scientists have digitally preserved the world’s most endangered marine mammal by creating highly detailed 3D models of a vaquita skeleton using advanced imaging technology. The virtual archive provides an unprecedented look at the species and could help inspire conservation efforts before the tiny porpoise disappears forever.
Phys.org - latest science and technology news stories Phys.org internet news portal provides the latest news on science including: Physics, Nanotechnology, Life Sciences, Space Science, Earth Science, Environment, Health and Medicine.
- Bird flu has claimed its first Australian sea...on September 16, 2026 at 10:40 pm
A rare Australian sea lion (Neophoca cinerea) on Kangaroo Island has been confirmed to have died from highly pathogenic H5N1 bird flu. The sea lion had recently been attacked by a shark, weakening it. Testing revealed that the virus caused its death. Another dead sea lion is being tested.
- Bubbles the food-stealing dolphin finds shortcut...on September 15, 2026 at 2:20 pm
A dolphin that harasses fish until they regurgitate their food—then swoops in to steal it—has astonished University of the Sunshine Coast researchers who have documented this novel feeding strategy.
- How bird movements are helping researchers track...on September 6, 2026 at 9:00 pm
While the highly virulent avian influenza strain has only recently been discovered on Australian shores, researchers at Deakin University have been working behind the scenes for years, anticipating what an outbreak might look like.
- Dolphin-feeding tourism contributes to predicted...on September 2, 2026 at 5:00 pm
A study published in the journal Oikos, titled "Forecasting the impact of food-provisioning and other stressors on a marine top-predator population," found that without protective management, the Indo-Pacific bottlenose dolphin population off Bunbury would fall from 350 to eight over 100 years.
- Electric fish keep from blinding themselves with...on September 2, 2026 at 3:00 pm
The brain cells you see in the above image help an African fish decode electric signals to spot prey, scan its murky surroundings and communicate with its fellows. By rigorously mapping how these cells in the electrosensory lobe are wired together, scientists at Columbia's Zuckerman Institute and their colleagues reveal how this brain area continually learns to filter out interference that would otherwise blind the fish's electric sense. They report their findings in Nature.
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Related
Here are links to pages about closely related subjects.
Sphere Land, Ice, Water (Ocean), Air, Life (Cell, Gene)
Ecosystem Forest, Grassland, Desert, Arctic, Aquatic
Tree of Life
Microorganism Virus
Prokaryote Archaea, Bacteria
Eukaryote Protist, Fungi, Algae, Protozoa (Tardigrade)
Plant Flower, Tree
Animal
Invertebrate
Cnidaria Coral, Jellyfish
Cephalopod Cuttlefish, Octopus
Crustacean Lobster, Shrimp
Arachnid Spider, Scorpion
Insect Ant, Bee, Beetle, Butterfly
Vertebrate
Fish Seahorse, Ray, Shark
Amphibian Frog, Salamander
Reptile Turtle, Tortoise, Dinosaur
Bird Penguin, Ostrich, Owl, Crow, Parrot
Mammal Platypus, Bat, Mouse, Rabbit, Goat, Giraffe, Camel, Horse, Elephant, Mammoth
Walrus, Seal, Polar Bear, Bear, Panda, Cat, Tiger, Lion, Dog, Wolf
Cetacean Whale, Dolphin
Primate Monkey, Chimpanzee, Human
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Notes
1. The resources on this page are are organized by a classification scheme developed exclusively for Cosma.





