Description: Four items including 'Island of San Benedicto NNW Distant about 17 Leagues near Siccorro', 'Island of Isabella', 'B- Appearance of Entrance of Masatlan (Mazatlan) E 6 Leagues', 'Cape [Maeopala] North 9 Miles, the small Island of St Ignacio in sight from Deck WNW - Gulf of California'; 'Hills of St John de Dios near St Blas', presumed to be from Hugh Babb, HMS Alert, 1831; 'Gulf of California - Sheet 1', by WJC, (with annotation 'From Remark Book HMS Alarm, 1858'), showing 'Isabella Island', annotated; 'Piedra de Tierra' from HMS Swift, 1850.

Description: Sketches from Captain F W Beechey, HMS Blossom, 1827, including '2nd or Prince George's Island', and 'Northern - One of Three Marias'.

Description: Seven items, including 'Isabella Island (T) N 2 Miles' from Captain F W Beechey, HMS Blossom, c.1827; 'Isabel Island NW 95 Miles between Mazatlan and San Blas, Gulf of California - Henry Hosken', c.1869; 'Piedra de Mer bearing E (of San Blas)' from HMS Herald, 1849; 'St Blas, W Coast of Mexico' by Mr Lant, Master, HMS Carysfort, 1842; 'San Blas from Anchorage off Town as it appears when to S of Piedra de Tierra'; 'San Blas as it appears to N of Piedra Blanca de Tierra' from HMS Swift, 1850; and 'View B - Highland in vicinity of San Blas'.

An up-to-date, detailed, and fully-illustrated account of the biodiversity and status of coral reefs.

Description: Five items, including 'Central America, W Coast, Gulf of California - Sheet 1 - San Blas to San Josef Islands'; 'North America - California - Mazatlan Harbour' from HMS Alarm, 1858, showing 'Sierra de San Sebastian', 'Ignacio Island', 'Triangular Hill near Barras de Los Piastla', 'Mark for Blossom Rock' (Azada and Gama Islands) and 'Ciervo Island'; 'Mazatlan in Mexico' from HMS Swift, 1850, showing 'Sugar Loaf Island'; 'San Ignacio Island N3/4E 4 Miles' by Midshipman C H Walker; and 'Coast East of Pajoras', by Thomas Harvey.