Practically from the first day that Lenie "t Hart has been rehabilitating seals, she has been supported by donations from the public. Now, the SRRC Foundation has over 55.000 financial supporters and the SRRC is not subsidised by the government in any way. The SRRC does regularly receive donations " in the form of money or medical equipment and goods such as salt, work clothes and towels " thanks to campaigns and initiatives (such as bequests) by private individuals, children, schools and businesses.

The SRRC is a foundation headed by a board, which is advised by specialists in all possible scientific fields. These specialists provide the SRRC with their knowledge free of charge. The SRRC works with protocols, which record the way a SRRC-worker must act during almost all occurring situations. Furthermore, the specialists (especially medical specialists) are always available to help with specific seal problems, for instance, if a seal swallows a fishhook.

The SRRC has 29 regular members of staff including two vets, two biologists, scientific researchers, seal-carers, information staff, technical and administrative staff. The heads of the different departments and the board form the staff. Next to its regular staff, the SRRC takes on dozens of volunteers and interns from all over the world every year. These volunteers fulfil an assisting role within the care and information departments. They take their knowledge about seal rehabilitation and seal care home with them, after a stay of 1-3 months.