| Relationships | Role | Relationship Start | Relationship End |
| Ampal-American Israel Corporation | Parent | 12/31/1998 | 7/7/1999 |
| Ampal-American Israel Corporation | Parent | 12/30/1987 | 12/30/1995 |
| Red Sea Underwater Observatory Ltd. | Subsidary | 12/31/1998 | 7/7/1999 |
| Maui Ocean Center, Inc. | Subsidary | 12/31/1989 | 12/30/1995 |
| International Underwater Observatories, Inc. | Subsidary | 12/30/1987 | 12/30/1989 |