Series was ended in 2025
| Mintage
year | Name | Value | Issue
date | Mintage |
|---|
UNC |  | 2022 | Blue-ringed octopus | 3 euro | 09.11.2022 | 65,000 |
| 2023 | Swell Shark | 3 euro | 15.02.2023 | 65,000 |
| 2023 | Antarctic Krill | 3 euro | 07.06.2023 | 65,000 |
| 2023 | Deep-sea Anglerfish | 3 euro | 13.09.2023 | 65,000 |
| 2023 | Stony Coral | 3 euro | 08.11.2023 | 65,000 |
| 2024 | Mauve Stinger | 3 euro | 06.03.2024 | 65,000 |
| 2024 | Blue Doctorfish | 3 euro | 05.06.2024 | 65,000 |
| 2024 | Hawaiian Bobtail Squid | 3 euro | 11.09.2024 | 65,000 |
| 2024 | Yellow Stingray | 3 euro | 16.10.2024 | 65,000 |
| 2025 | Firefly Squid | 3 euro | 19.02.2025 | 65,000 |
| 2025 | Doridid Nudibranch | 3 euro | 11.06.2025 | 65,000 |
| 2025 | Devil Scorpionfish | 3 euro | 10.09.2025 | 65,000 |
| 2026 | The Hippocampus | 3 euro | 28.01.2026 | 65,000 |
| 2026 | The Elf | 3 euro | 17.06.2026 | 65,000 |
| 2026 | The Basilisk | 3 euro | 09.09.2026 | 65,000 |
