The name Petrel is given to three different Families of Procellariiformes seabirds. They are characterised by their tubular nasal passage, which is used for locating the patchily distributed prey. They also drink sewater, and exude the salt via a special gland at the base of the bill, dripping a saline solution from their nostrils. Marine foragers, the majority of their life is spent gliding above the ocean, and snatching fish or squid from near the surface or diving for it. This fellow, the Cape Petrel, is a common Antarctic and sub-Antarctic species.
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