CRESLI marine mammal observations from whale watch cruises 2025

Coastal Research and Education Society of Long Island, Inc.

Cetacean sightings data for the waters off Montauk for July 2025 through mid-
September 2025

The Coastal Research and Education Society of Long Island is a non-profit research and education organization. Our mission is: "To promote and foster understanding and stewardship of coastal ecosystems through research and education ." Part of our work is to observe, document, and collect pertinent data and photographs of the cetaceans and sea bird populations of NY and New England and to take people to see these animals in the wild.

Since 1996 we have been offering incredible and successful single day and multi-day offshore pelagic bird and whale observation trips.

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The dataset has been updated over time as outlined below. Each entry includes the version number, release date, type of change, and a short description.

Overview

This section explains attributes included in the original dataset. The availability of the attributes depends on the share policy. When "Minimum attributes" is selected, only date/time, lat/lon, species identification and group size are available. Should you need other attributes described here, you are encouraged to contact the data provider. When "All attributes" is selected, all attributes are available in download.

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
oid	Unique ID number (generated by OBIS-SEAMAP)
globalid	Global ID
creationdate	Creation date
creator	Creator (always "CRESLI")
editdate	Edit date
editor	Editor (always "CRESLI")
obs_date	Observation date
obs_time	Observation time (hh:mm)
sea_surface_temp	Sea surface temperature
sea_state	Beaufort Sea State
depth	Depth
prey_density_profile	Prey Density Profile
prey_depth_profile	Prey Depth Profile
prey_species	Prey species
sp_obs	Cetacean - Focal Individual(S) Species
sp_tsn	ITIS Taxonomic Serial Number added by OBIS-SEAMAP
life_stage	Life Stage - Focal Individual(s)
same_individual	Same individual as previous entry?
minimum_number_of_focal_individuals	Minimum Number of focal individuals
maximu_number_of_focal_individuals	Maximum Number of focal individuals
obs_count	Average of group size added by OBIS-SEAMAP
additional_species	Additional Species (if present)
number_of_individuals_of_additional_species	Number or range (min-max) of individuals of additional species
feeding	Feeding?
feeding_behavior	Feeding behavior of focal individual (s)
dive_behavior	Dive behavior (Mysticetes only)
interactive_behaviors	Interactive Behaviors
surface_display_behaviors	Surface Display Behaviors
terminal_dive_duration	Terminal Dive duration (whales only)
number_of_individuals_of_additional_species2	Number or range (min-max) of individuals of additional species
longitude	Longitude in decimal degrees
latitude	Latitude in decimal degrees
geom	Geometry field added by OBIS-SEAMAP