* Habitat: Turtle grass grows underwater in marine environments, while white-tailed deer live in terrestrial habitats.
* Diet: Deer prefer browsing on trees, shrubs, and grasses found on land. They can also eat some fruits and vegetables, but their diet is mostly focused on terrestrial plants.
* Toxicity: While turtle grass is not toxic, it's not a suitable food source for deer. Its high salt content and different nutritional profile wouldn't be ideal for a deer's digestive system.
In conclusion, it's highly unlikely for a white-tailed deer to eat turtle grass.