This page illustrates the availability of cetacean data by regions of the US Exclusive Economic Zone (EEZ) and by month.
Legend (Data Tier, Code, Description):
|1||hd||Habitat-based Density||3||po||Probability of Occurrence (no longer in use)||5||exp||Expert-based presence||Biologically Important Areas|
|2||sd||Stratified Density||4||rec||Records Exist||5||exa||Expert-based likely absence|
Detailed descriptions of the Data Tiers that indicate their relative quality may be found HERE. Note that expert-based presence for each species was designated at the temporal resolution of an entire year, such that a species is considered “present” if it is known to occur in that region at any time during the year. This tier does not provide information on species presence during specific months.