This dataset contains occurrence records for the reef manta ray (*Mobula alfredi*) observed in Australian waters from 2014 to 2024. The data includes spatial and temporal metadata, species identifiers, and linked weather station IDs.
Format
A tibble with 1,088 rows and 14 variables:
- obs_lat
Latitude of the observation (decimal degrees)
- obs_lon
Longitude of the observation (decimal degrees)
- date
Date of the observation (YYYY-MM-DD)
- time
Time of the observation (HH:MM:SS)
- year
Year of the observation
- month
Month (1–12)
- day
Day of the month
- hour
Hour extracted from the time (0–23)
- weekday
Day of the week (as ordered factor)
- dayofyear
Day of the year (1–366)
- sci_name
Scientific name — all observations are Mobula alfredi
- record_type
Type of observation (e.g., MACHINE_OBSERVATION)
- obs_state
Australian state where the observation occurred (may be missing)
- ws_id
Nearest weather station ID (e.g., "947800-99999")
Details
Records were accessed using the galah package and filtered specifically for *Mobula alfredi*. Data has been cleaned and enriched with spatial proximity to weather stations for climate-related analysis.
Examples
data(manta_rays)
head(manta_rays)
#> # A tibble: 6 × 14
#> obs_lat obs_lon date time year month day hour weekday dayofyear
#> <dbl> <dbl> <date> <chr> <dbl> <dbl> <dbl> <int> <ord> <dbl>
#> 1 -33.9 151. 2014-01-04 00:00:00 2014 1 4 0 Saturday 4
#> 2 -33.9 151. 2015-07-28 00:00:00 2015 7 28 0 Tuesday 209
#> 3 -33.9 151. 2014-08-07 00:00:00 2014 8 7 0 Thursday 219
#> 4 -33.8 151. 2024-12-22 11:44:00 2024 12 22 11 Sunday 357
#> 5 -33.8 151. 2024-12-22 12:50:25 2024 12 22 12 Sunday 357
#> 6 -33.8 151. 2024-12-22 08:19:48 2024 12 22 8 Sunday 357
#> # ℹ 4 more variables: sci_name <chr>, record_type <chr>, obs_state <chr>,
#> # ws_id <chr>