| Name | Deductibility Code |
| Coastal Conservation and Research | -- |
| Creative Environmental Conservation | -- |
| Friends of Moss Landing Marine Laboratories Inc. | -- |
| Monterey Bay Aquarium Research Institute | 3 |
| National Instructors Association for Divers With Disabilities | -- |
| Okeanis | -- |
| Pacific Cetacean Group | -- |
| Shakespeare Society of America | -- |