carapace shape
Compared with the other visible details in your photo.
Identify a crab
from a photo
Upload one clear photo with the crab clearly visible. We’ll compare visible details and show the most likely matches.
Choose a crab photo
JPG, PNG or WebP · One clear subject works best
or drag and drop hereWhat this identifier looks for
claw proportions
Compared with the other visible details in your photo.
leg form
Compared with the other visible details in your photo.
color and markings
Compared with the other visible details in your photo.
Useful for
shore crabsswimming crabsland crabsdecorator crabs
A focused photo analysis
What a clear photo can reveal
The Crab Identifier compares the visible subject with clues selected specifically for crabs. That focused approach keeps the result relevant to this topic instead of returning a generic image description.
It examines carapace shape, claw proportions, leg form, color and markings. The result may include likely names, descriptive evidence, contextual information, and confidence when that field is part of the topic’s verified response format.
04
Core visual clues
01
carapace shape
02
claw proportions
03
leg form
04
color and markings
How this result is built
A method tuned to crabs
Signals considered
The topic configuration asks the model to compare the visible evidence that matters for this subject.
Structured result
The response must fit the verified schema for this identifier instead of returning an open-ended image description.
Limits and next steps
A single photo can hide important details of crabs. Use the candidates as a starting point and verify important decisions independently.
Confidence, when shown, is a model estimate—not a calibrated probability or professional confirmation.
Questions
Before you upload
How do I use the Crab Identifier?＋
Choose one clear photo with the crab clearly visible, wait for it to be prepared in your browser, and select “Identify this photo.” The result compares the visible details with likely matches.
What details does the Crab Identifier analyze?＋
It focuses on carapace shape, claw proportions, leg form, color and markings. Clear, well-lit photos with the subject filling most of the frame usually provide the most useful result.
How reliable is a result from the Crab Identifier?＋
A photo result is a starting point, not a guaranteed determination. Image quality, angle, missing context, lookalike subjects, and regional variation can all affect the match.