Ensures that the activities of the Lithuanian Sea Museum comply with the requirements of applicable laws and regulations, and that internal management processes are transparent, effective, and consistent. The department coordinates matters related to legal affairs, document management, human resources administration, employee health and safety, and corruption prevention, and provides legal and methodological support to museum staff and management. The department also contributes to improving the organization’s operations, strengthening internal processes and quality management, developing employee competencies, and creating a safe, ethical, and responsible work environment.

Ensures high-quality visitor services at the Lithuanian Sea Museum—provides information and assistance, organizes ticket and service sales, manages the ticketing system, and coordinates visitor flows. The department ensures a clean, safe, and comfortable environment in the museum’s exhibits, public spaces, and grounds; continuously improves visitor services; and ensures their accessibility to various segments of the public. The department also coordinates the museum’s volunteer activities, contributes to the implementation of sustainability initiatives, and strives to create the best possible visitor experience at the museum.

Develops, organizes, and implements the Lithuanian Maritime Museum’s educational activities for visitors of all ages, with the aim of highlighting the value of Lithuania’s maritime cultural heritage, ethnoculture, and marine nature, and promoting environmentally responsible behavior. The department develops educational programs and teaching materials, ensures their accessibility to various target groups, and coordinates the development, promotion, and quality assessment of educational services. The department also collaborates with educational, cultural, and other institutions; initiates and implements national and international projects; contributes to the creation of educational content for exhibitions and displays; and ensures a safe and high-quality visitor experience at the museum.

Responsible for the Lithuanian Sea Museum's public communications, branding, and marketing, with the aim of increasing the museum's visibility and attracting a diverse range of visitors. The department plans and implements strategies for communication, public relations, marketing, and sponsor acquisition; manages the museum’s website and social media accounts; and organizes information dissemination and marketing campaigns. The department also coordinates the museum’s publishing and exhibition activities, organizes events, conducts visitor needs surveys, develops cooperation with the tourism sector, and contributes to the promotion of Lithuania’s maritime cultural heritage, marine nature, and environmental values.

Responsible for the financial management of the Lithuanian Sea Museum, the organization of financial accounting, and budget planning, ensuring the transparent, lawful, and effective use of financial resources. The department prepares financial plans, estimates, and reports; manages payroll and other payments; performs financial controls; and provides the financial information and analyses necessary for management decision-making. The department also coordinates the financial management of projects, advises the museum’s departments on financial and accounting matters, and contributes to the improvement of the internal control system.

Organizes and coordinates the public procurement processes of the Lithuanian Sea Museum, ensuring their legality, transparency, and efficiency. The department handles legal matters related to public procurement and asset management, coordinates the drafting and execution of contracts, and oversees the administration, use, and accounting of assets managed by the museum. The department also organizes procedures for the lease, use, and sale of assets, advises the museum’s departments on matters within its purview, and represents the museum’s interests in the areas of public procurement, asset management, and legal processes.

Responsible for the collection, research, preservation, and public presentation of marine and freshwater animals and marine natural history collections on display at the Lithuanian Sea Museum. The department ensures the welfare of the live exhibits in the aquariums, monitors their living conditions, technical systems, and the quality of the exhibits, and organizes marine life exhibitions and displays. The department also conducts scientific research, participates in international professional cooperation, contributes to educational and publishing activities, and disseminates knowledge about marine biology, nature conservation, and the importance of preserving marine ecosystems.

Responsible for the welfare, care, breeding, and exhibition quality of the marine mammals and birds housed at the Lithuanian Sea Museum, ensuring appropriate living conditions for the animals in accordance with the highest animal welfare standards. The department organizes and oversees the operations of the penguin house and outdoor pools, conducts scientific research, participates in international conservation programs, contributes to the conservation of the Baltic Sea seal population, and carries out their rehabilitation. The department also participates in the museum’s educational and public outreach activities, develops the scientific content of educational programs, and provides visitors with opportunities to learn about marine animals through interactive activities and feeding demonstrations.

Collects, researches, records, preserves, and digitalizes the Lithuanian Sea Museum's collections on maritime history, ensuring their long-term preservation and accessibility to the public. The department develops the scientific concepts for maritime history exhibitions and displays, organizes the conservation and restoration of museum artifacts, oversees the exhibitions, and coordinates the public presentation of the collections in the Lithuanian Integrated Museum Information System (LIMIS) and other cultural heritage portals. The department also conducts research, participates in educational and publishing activities, collaborates with museums and academic institutions in Lithuania and abroad, and provides consultation on matters related to the history of shipping.

The department is responsible for the welfare, daily care, training, and public presentation of the animals housed at the Lithuanian Sea Museum. The department develops and implements educational programs involving animals, participates in dolphin therapy activities, conducts scientific research, and collaborates with Lithuanian and foreign institutions in the areas of animal care, welfare, and the dissemination of professional expertise. The department also plans and organizes its activities, ensures the necessary material resources, and contributes to the achievement of the museum’s strategic goals.

It carries out healthcare, educational, and scientific activities aimed at promoting the well-being of children and adults with disabilities or health conditions. The department provides special education services, organizes individual and group sessions with dolphins, develops and applies innovative animal-assisted therapy methods, and contributes to holistic support for families. The department also conducts research, fosters international collaboration, disseminates scientific knowledge about dolphin therapy and disability, and contributes to public education and the promotion of inclusion.

Ensures the reliable and uninterrupted operation of the Lithuanian Sea Museum's technical infrastructure, engineering, and technological systems. The department organizes and carries out the maintenance, technical servicing, and repair of the buildings' engineering systems, electrical systems, heating, water supply, wastewater systems, and technological equipment. The department also coordinates the implementation of environmental protection and electrical safety requirements, thereby contributing to the safe and efficient operation of the museum.