Around the world, concrete is widely used as an essential building material, however it can fracture and let water and salts in, which can cause corrosion and shorten the structure's lifespan. In particular, the robustness of bacterial concrete in marine environments where it is exposed to more extreme conditions is examined in this extensive study. Making use of the special properties of bacteria that may produce calcium carbonate, bacterial concrete, also known as Bio-Concrete, takes advantage of this. Sealing the cracks helps the concrete self-heal, hence increasing the structure's lifespan. The goal of the study is to shed light on how bacterial concrete might lessen the negative impacts of environmental stressors on concrete structures in maritime environments. The study highlights how crucial it is to take into account the sustainability and economic viability of bacterial concrete in coastal environments before implementing it widely. The study immersed bacterial concrete beams in seawater for 365 days, showing no rebar corrosion, a common issue with normal concrete. It also compared the strength of normal and bacterial concrete. The research explored using RHA to strengthen M40-grade concrete and adding 5% to 10% corn starch to improve flowability and setting time without compromising strength and durability. Additionally, 0.5% silica fume was introduced to enhance concrete strength and durability. Concrete's capacity to survive weathering, chemical abrasion, and other difficulties throughout time is largely dependent on its durability. Crack prevention is essential for maintaining structural integrity, water tightness, and aesthetic appeal. Moreover, concrete structures' longevity and functioning could be greatly improved by the development of a trustworthy automated crack repair system. For this reason, maintaining the longevity of concrete structures depends critically on controlling the fracture widths. The study also examines the sustainability over the long run and the difficulties involved in using bacterial concrete in marine construction, providing important information for researchers and engineers and advancing our knowledge of the material's potential for durable and robust marine applications.