World Turtle Day is an annual observance held on May 23 to raise awareness about the importance of conserving turtle and tortoise species and the need to protect their habitats.

International Day for Biological Diversity is an annual observance held on May 22 to raise awareness about the importance of biodiversity and the need for conservation efforts to maintain balance in ecosystems globally.

World Migratory Bird Day is an annual observance held to raise awareness about the importance of migratory birds and the need to protect their habitats.