The island predominantly consists of a steep hill with rocky outcroppings, while its shoreline is made up of large rocks.

[1] A sample of basaltic andesite from Booby Island's southeast coast was predominantly composed of silicon dioxide by weight (56.41%).

[1] Eight species of seabird are found on Booby Island, where nesting season begins in April or May and ends between August and October.

The island's geography makes human access challenging, as boats cannot dock and visitors must swim over the rocky shoreline.

[8] Since 2008, the Booby Island Sailing Regatta has been held annually to promote tourism outside of the usual tourist season.

[12] An American student was bitten by a tiger shark while swimming off the island's coast in 2021, resulting in amputation above the knee.