Dall's porpoise
E740999
Dall's porpoise is a fast-swimming, black-and-white marine mammal found in cold North Pacific waters, known for its torpedo-shaped body and distinctive rooster-tail spray when surfacing.
All labels observed (2)
| Label | Occurrences |
|---|---|
| Dall's porpoise canonical | 2 |
| Lagenorhynchus obliquidens | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T8538504 — resolving that mention is where its identity was fixed. The disambiguator weighed these candidate entities and picked the highlighted one (or “None”, minting a new entity). This is how homonymy is resolved: the same surface form can point to different entities.
NED1
Entity disambiguation (via context triple)
gpt-5-mini-2025-08-07
Target entity: Dall's porpoise Context triple: [Race Rocks, hasFauna, Dall's porpoise]
-
A.
Commerson's dolphin
Commerson's dolphin is a small, strikingly black-and-white marine dolphin species known for its energetic behavior and coastal habitat in the Southern Hemisphere.
-
B.
Atlantic white-sided dolphin
The Atlantic white-sided dolphin is a small, agile marine mammal found in the cold temperate waters of the North Atlantic Ocean, known for its striking black, white, and yellowish coloration and highly social behavior.
-
C.
Hector’s dolphin
Hector’s dolphin is a small, endangered dolphin species endemic to New Zealand’s coastal waters, known for its rounded dorsal fin and limited distribution.
-
D.
Cuvier's beaked whale
Cuvier's beaked whale is a deep-diving, elusive cetacean species known for holding the record for the longest and deepest dives among marine mammals.
-
E.
Zalophus
Zalophus is a genus of eared seals that includes the California sea lion and closely related sea lion species found along Pacific coasts.
- F. None of above. chosen
- G. Unsure - the case is ambiguous/there is not enough information to decide.
NED2
Entity disambiguation (via description)
gpt-5-mini-2025-08-07
Target entity: Dall's porpoise Target entity description: Dall's porpoise is a fast-swimming, black-and-white marine mammal found in cold North Pacific waters, known for its torpedo-shaped body and distinctive rooster-tail spray when surfacing.
-
A.
Commerson's dolphin
Commerson's dolphin is a small, strikingly black-and-white marine dolphin species known for its energetic behavior and coastal habitat in the Southern Hemisphere.
-
B.
Atlantic white-sided dolphin
The Atlantic white-sided dolphin is a small, agile marine mammal found in the cold temperate waters of the North Atlantic Ocean, known for its striking black, white, and yellowish coloration and highly social behavior.
-
C.
Hector’s dolphin
Hector’s dolphin is a small, endangered dolphin species endemic to New Zealand’s coastal waters, known for its rounded dorsal fin and limited distribution.
-
D.
Cuvier's beaked whale
Cuvier's beaked whale is a deep-diving, elusive cetacean species known for holding the record for the longest and deepest dives among marine mammals.
-
E.
Zalophus
Zalophus is a genus of eared seals that includes the California sea lion and closely related sea lion species found along Pacific coasts.
- F. None of above. chosen
Statements (48)
| Predicate | Object |
|---|---|
| instanceOf |
marine mammal
ⓘ
porpoise ⓘ |
| averageLitterSize | one calf ⓘ |
| binomialName | Phocoenoides dalli NERFINISHED ⓘ |
| bodyColor | black and white ⓘ |
| class | Mammalia ⓘ |
| commonName | Dall's porpoise NERFINISHED ⓘ |
| communication | echolocation clicks ⓘ |
| diet |
crustaceans
ⓘ
fish ⓘ squid ⓘ |
| distinctiveFeature |
rooster-tail spray when surfacing
ⓘ
triangular dorsal fin ⓘ white lateral flank patches ⓘ |
| distributionLimit |
Bering Strait region
NERFINISHED
ⓘ
southern California NERFINISHED ⓘ southern Japan ⓘ |
| family | Phocoenidae NERFINISHED ⓘ |
| feedingType | carnivore ⓘ |
| genus | Phocoenoides NERFINISHED ⓘ |
| habitat |
cold temperate marine waters
ⓘ
deep coastal waters ⓘ offshore waters ⓘ |
| hasBodyShape | torpedo-shaped body ⓘ |
| hasCalvingSeason | summer ⓘ |
| IUCNStatus | Least Concern ⓘ |
| kingdom | Animalia ⓘ |
| maximumLength | about 2.3 metres ⓘ |
| maximumWeight | about 220 kilograms ⓘ |
| namedAfter | W. H. Dall NERFINISHED ⓘ |
| nativeTo |
Bering Sea
NERFINISHED
ⓘ
Gulf of Alaska NERFINISHED ⓘ North Pacific Ocean NERFINISHED ⓘ Okhotsk Sea NERFINISHED ⓘ Sea of Japan NERFINISHED ⓘ |
| order | Cetacea ⓘ |
| parentTaxon | Phocoenoides dalli NERFINISHED ⓘ |
| phylum | Chordata ⓘ |
| reproduction | viviparous ⓘ |
| sexualDimorphism | males larger than females ⓘ |
| socialBehavior |
forms small groups
ⓘ
sometimes associates with large whales ⓘ |
| swimmingSpeed | very fast swimmer ⓘ |
| taxonRank | species ⓘ |
| threat |
bycatch in fisheries
ⓘ
hunting in some regions ⓘ marine noise pollution ⓘ pollutant accumulation ⓘ |
How these facts were elicited
The pipeline generated the facts above by prompting gpt-5.1 with this entity's name + description and the instruction below.
Instruction
You are a knowledge base construction expert. Given a subject entity and a description of it, return factual statements that you know for the subject as a JSON list of dictionaries(triples), where keys must be "subject", "predicate" and "object". The number of facts may be very high, between 25 to 50 or more, for very popular subjects. For less popular subjects, the number of facts can be very low, like 5 or 10. # Requirements - If you don't know the subject at all, return an empty list. - If the subject is not a named entity, return an empty list. - Include at least one triple where predicate is "instanceOf". - Do not get too wordy. - Separate several objects into multiple triples with one object.
Input
Subject: Dall's porpoise Description of subject: Dall's porpoise is a fast-swimming, black-and-white marine mammal found in cold North Pacific waters, known for its torpedo-shaped body and distinctive rooster-tail spray when surfacing.
Referenced by (3)
Full triples — surface form annotated when it differs from this entity's canonical label.
this entity surface form:
Lagenorhynchus obliquidens