Various species have been tracked using ARGOS PTT trackers since the early 1990 s. These include Emperor, King and Adelie pengiuns, Light-mantled Sooty, Grey-headed and Black-browed albatrosses, Antarctic and Australian fur seals, Southern Elephant Seal and Blue and Humpback whales. Note that not all data for any species or locations is or will be exposed to OBIS. Geographic coverage is from Heard Island to the west and Macquarie Island to the east and several islands near the southern end of Chile. The data has been filtered to remove most but not all erroneous positions. DiGIR is an engine which takes XML requests for data and returns a data subset stored as XML data (as defined in a schema). For more DiGIR information, see http://digir.sourceforge.net/ , http://diveintodigir.ecoforge.net/draft/digirdive.html , and http://digir.net/prov/prov_manual.html . A list of Digir providers is at http://bigdig.ecoforge.net/wiki/SchemaStatus . Darwin is the original schema for use with the DiGIR engine. The Ocean Biogeographic Information System (OBIS) schema extends Darwin. For more OBIS info, see http://www.iobis.org . See the OBIS schema at http://www.iobis.org/tech/provider/questions . Queries: Although OBIS datasets have many variables, most variables have few values. The only queries that are likely to succeed MUST include a constraint for Genus= and MAY include constraints for Species=, longitude, latitude, and time. Most OBIS datasets return a maximum of 1000 rows of data per request. The limitation is imposed by the OBIS administrators. Available Genera (and number of records): (error)