Based on the story provided, here's the evaluation of its Tragedy Degree and Comedy Degree:

### Tragedy Degree:
The story contains moderate tragic elements, such as the depiction of a damaged marine ecosystem, bleached corals, and the struggle to bring about environmental change. These elements evoke some emotional setbacks and concern for the future of marine life, but they are not overwhelmingly tragic.

### Comedy Degree:
The story has a relatively uplifting conclusion. Ellie’s thesis defense is successful, sparking a local movement and giving a sense of hope and positive change. While the story is inspirational, it does not contain strong comedic elements or highly light-hearted plots. It is emotionally inspiring rather than delightful.

Therefore, the scores are as follows:
- Tragedy Degree: 5
- Comedy Degree: 4

```json
{
  "TragedyDegree": 5,
  "ComedyDegree": 4
}
```
