The subspecies of the Islas Tres Marías, also found around San Blas, Nayarit, is sometimes considered a separate species, Grayson's Robin or Grayson's Thrush, Turdus graysoni (Ridgway, 1882).
The ruins once contained the bronze bells that are said to have inspired Henry Wadsworth Longfellow's poem, "The Bells of San Blas".
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In the 1960s, Hollywood had a brief hideaway flirtation with San Blas when the likes of actor Lee Marvin discovered San Blas for fishing.
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After the combat in El Realejo, the Argentines found the same schooner with the Spanish flag that they had lost in San Blas.
Grupo Modelo, brewers of Corona beer, sent 6,600 gallons (25,000 liters) of drinking water and 1000 food sets for the San Blas area.