 Species in the "subniger group" exhibit greater mobility of the plastral front lobe than those belonging to the "adansonii group".Based on field surveys, a 50% decrease has been observed in the Seychelles terrapins, which include various "Pelusios" species.Seychelles is considered a hotspot for biodiversity, as it is one of the most threatened reservoirs of plant life and animal life, as well as one of the richest environments.