The cape was named by Edward Bransfield in 1820 after Captain William H. Shirreff, the British commanding officer in the Pacific at that time.
Situated on a small, 3.22 km2 (1.24 sq mi)[1] ice-free peninsula forming the northern extremity of Ioannes Paulus II Peninsula, which is protected by the Convention on the Conservation of Antarctic Marine Living Resources Ecosystem Monitoring Programme and requires a permit to enter.
[3] The cape has been identified as an Important Bird Area (IBA) by BirdLife International because it supports a large breeding colony of up to about 10,000 pairs of chinstrap penguins.
Other birds nesting at the site in smaller numbers include gentoo penguins, kelp gulls, brown skuas, snowy sheathbills, Antarctic terns, imperial shags, Wilson's and black-bellied storm petrels, and Cape petrels.
[4] The cape, with nearby San Telmo Island, has also been designated an Antarctic Specially Protected Area (ASPA 149) for the diversity of its plant and animal life, especially its penguin and fur seal breeding colonies.