Mammals › Oceanic Dolphins
Risso's Dolphin
Grampus griseus
28 photos
Study shows up to four per card, from different observers, so you learn the species rather than one picture. Heart the good ones and swap any you do not like.
Photos you add are credited to you, and you keep the copyright.
Easily confused with
Common Bottlenose DolphinTursiops truncatus
Pygmy Killer WhaleFeresa attenuata
Atlantic Spotted DolphinStenella frontalis
Harbour PorpoisePhocoena phocoena
OrcaOrcinus orca
Short-finned Pilot WhaleGlobicephala macrorhynchus
Curled OctopusEledone cirrhosa
Study checks a spoken answer against these, and tells you which one you named.
Where it is recorded
| United States | 9,037 |
|---|---|
| California | 6,224 |
| Alaska | 2,241 |
| North Carolina | 96 |
| Canada | 59 |
| Hawaii | 55 |
| Virginia | 53 |
| British Columbia | 51 |
| Washington | 49 |
| Massachusetts | 47 |
Counts show where people looked, not only where it lives.
Traits
Behavioral
- SocialLives in groups or coloniesFrom its classification
- SmartDemonstrates problem-solving and learningFrom its classification
Physical
- AquaticLives primarily in waterChecked by the maintainer
- EcholocationUses sonar to navigate and huntChecked by the maintainer
Classification
| Kingdom | Animals · Animalia |
|---|---|
| Phylum | Chordates · Chordata |
| Class | Mammals · Mammalia |
| Order | Even-toed Ungulates and Cetaceans · Artiodactyla |
| Family | Oceanic Dolphins · Delphinidae |
| Genus | Grampus |
Study it in a deck
Or build your own from the species near you.
Sources
- Names, taxonomy and observation counts: www.inaturalist.org
- Photos and recordings: the creator and source are on each one.
- How much to rely on each source
Remember the name next time.
Practise Risso's Dolphin with real photos from different observers. Say the name out loud, and it comes back just before you would forget it.