Florida Manatee Mortality 1974-2020

Florida Fish and Wildlife Conservation Commission - Fish and Wildlife Research Institute

Dataset credit

Florida Fish and Wildlife Conservation Commission - Fish and Wildlife Research Institute


Primary contact Andrea Krzystan Florida Fish & Wildlife Conservation Commission, Fish and Wildlife Research Institute
Data entry Ei Fujioka Duke University



This dataset contains data from the geographic information system (GIS) shapefile of recovered Florida manatee (Trichechus manatus latirostris) carcass locations within Florida from April 1974 through to the latest spatially verified data presently available. Locations are based both on coordinates provided by field staff (gathered either by geographic positioning system [GPS] or by using navigation charts to ascertain latitudes and longitudes) and maps provided by the field staff. Fish and Wildlife Research Institute (FWRI) GIS staff in the Marine Mammal subsection verify that the provided coordinates match the intent of the plotted location. Points representing carcass locations were entered into a GIS using a digital shoreline basemap taken largely from NOAA navigation charts (1:40,000) and from USGS quadrangles (1:24,000). The scale is considered to be 1:40,000.


The primary use of this dataset is to display reported manatee carcass recovery locations and associated attributes, such as cause of death.

Supplemental information

Prior to July 1, 2004, the Fish and Wildlife Research Institute (FWRI) was known as the Florida Marine Research Institute (FMRI).

Counts were not available and filled with "1"; time was not available and filled with "00:00:00."

07/28/2021: Data up to Aug 2020 were added.

01/07/2019: Data up to May 2017 were added. Data format was changed. The previous contact was replaced with Andrea Krzystan.

04/04/2019: Data up to Dec 2017 were added.

07/28/2016: March - June 2015 data were added. The data were downloaded from http://geodata.myfwc.com/datasets/ba5b92ec509f48f38c61aa542e96236f_1 on 07/28/2016.

03/29/2016: 2011-2015 data were added. The data were downloaded from http://geodata.myfwc.com/datasets/ba5b92ec509f48f38c61aa542e96236f_1.

11/11/2011: This dataset, originally containing data from 1974-early 2010, was updated to include data through December 2010 data.

07/21/2011: This dataset, originally containing data from 1974-2008, was updated to include 2009-2010 data.




This section explains attributes included in the original dataset. OBIS-SEAMAP restricts the attributes available to the public to date/time, lat/long and species names/counts only. Should you need other attributes described here, you are encouraged to contact the data provider.

Attributes described below represent those in the original dataset provided by the provider.
Only minimum required attributes are visible and downloadable online. Other attributes may be obtained upon provider's permission.

Attributes in dataset

Attribute (table column)Description
oidUnique ID number (generated by OBIS-SEAMAP)
objectidObject ID
fieldidUnique Field ID assigned to each manatee carcass recovered. This ID is used to identify the region of Florida, year and chronological order within that year for the region of Florida where the carcass was recovered. Exceptions include animals that were rescued, then died while in the care of an oceanaria facility, which include Sea World (SWFTm), Lowry Park Zoo (LPZ) and Miami Seaquarium (MSQ).
repdateReport date
repyearReport year
repmonthReport month
repdayReport day
sexSex of recovered manatee carcass (M: male, F: female, U: unknown)
tlengthTotal length of the manatee carcass, measured from snout to fluke edge in centimeters.
countyCounty within Florida that the manatee carcass was recovered in.
latitudeLatitude of manatee carcass recovery location. Decimal degree, in NAD27
longitudeLongitude of manatee carcass recovery location. Decimal degree, in NAD27
dcodedefinition not provided
mortalityDescription of mortality
created_userdefinition not provided
created_datedefinition not provided
last_edited_userdefinition not provided
last_edited_datedefinition not provided
obs_datetimeDate (time was not recorded and is 00:00:00)
speciesSpecies observed
sp_tsnTaxonomic Serial Number added by OBIS-SEAMAP
obs_countAlways 1. Added by OBIS-SEAMAP.
geomGeometry field added by OBIS-SEAMAP
Marine mammals13,356
Sea turtles0
Rays and sharks0
Other species0
Non spatial0
Non species0
Date, Begin1974-04-03
Date, End2020-08-31
Temporal prec.111000
Latitude24.56 - 30.72
Longitude-87.41 - -80.02
Coord. prec.6 decimal digits
Data typeAnimal sighting
Traveled (km)0
Contr. through
Sharing policy CC-BY-NC (Minimum)
Shared with OBIS
GBIF (via DOI)
See metadata in static HTML
See metadata in FGDC XML
See download history / statistics