This species is traditionally considered as an open ocean nomad. It is particularly vulnerable to fish aggregating devices (FADs) used by the tuna fleet, and therefore it is one of the species most affected by incidental fishing. However, individuals tagged in the Galapagos Islands have shown periods of residence of over three years, in some cases staying close to the same island, in others using the entire marine reserve. Similar patterns have been recorded in the Revillagigedos Islands, with periods of residence of several months, at Roca Partida as well as Socorro Island and San Benedicto.
In spite of the residential behavior of several sharks, some individuals move over large distances from Cocos Island, the Revillagigedos Islands and the Galapagos Islands, moving along the edge of the Central American continental platform.
Connectivity between the Galapagos Islands, Cocos Island and the Clipperton Atoll
A silky shark tagged off Darwin Island, in the Galapagos archipelago, made a return journey to Clipperton, the only coral atoll in the region, situated 2200 kilometers away. The same shark made the same journey twice, showing the acute navigational skill of this species. Another silky shark tagged off Cocos Island migrated to Darwin Island, where it stayed for several months.