Terrapin Watch
About Terrapin Watch
Terrapin Watch is a community science project that engages Long Islanders in an effort to monitor and record the distribution of diamondback terrapins in our region. Participants are simply asked to report any diamondback terrapin sightings through our data collection system. Reports can be submitted through the data form below or on a mobile device through the free Survey 1-2-3 app.
Please contact Arielle Santos at [email protected] or 631-581-6908 with any questions regarding the survey.
Accessing the Survey 1-2-3 Mobile Field App

- First, you must download the free Survey 123 mobile app on your mobile device
- Scan the QR code on the left using your phone’s camera. If you are currently on your mobile device, click here to download the Terrapin Watch survey and proceed with steps 4 & 5
- After scanning the QR code, click the top banner notification to open ArcGIS
- Choose “Open in the Survey 123 field app”, and “Open this page in Survey 123”
- Choose “Continue without signing in”
Terrapin Watch Survey Map
Please Note: Clickable data points (shown in red) do not reflect confirmed sightings of wildlife. Each red dot indicates a survey submission.
Related Information

Vernal Pools
The Long Island Vernal Pool Project is an island-wide effort to identify, map and safeguard these rare habitats and the unique assemblage of wildlife they support.

Dam Failures
Rebuilding failed dams may occasionally make sense, but in most cases allowing rivers and streams to revert to their natural state will help make the region and its coastal ecosystem more healthy, resilient and sustainable.

Horseshoe Crabs
The horseshoe crab (Limulus Polyphemus) has been around practically unchanged for over 450 million years, categorizing it as a “living fossil”. These fascinating creatures aren’t actually crabs at all, as they don’t fall under the subphylum “crustacea,” which includes blue crab, spider crabs and other true crabs.