FOLLOW US:

Stay connected with us
around the nation »


Short-finned Pilot Whale (Globicephala macrorhynchus)

Status | Species Description | Habitat | Distribution | Population Trends | Threats | Conservation Efforts | Regulatory Overview | Taxonomy | Key Documents | More Info

Status

MMPA - Short-finned pilot whales, like all marine mammals, are protected under the MMPA
CITES Appendix II - throughout its range

Species Description

Weight:
 2200-6600 pounds (1000 - 3000 kg)
Length:
females average 12 feet (3.7 m) and males average 18 feet (5.5 m), with a maximum male size of 24 feet (7.3 m)  
Appearance:
a bulbous melon head with no discernable beak and black or dark brown color, with a large gray saddle behind the dorsal fin.
Lifespan:
45 years for males and 60 years for females
Diet:
primarily feed on squid, but also feed on octopus and fish, in moderately deep water (1000 feet or more)
Behavior:
Often occur in groups of 25 to 50 animals. Males have multiple mates and group ratio is typically 1 mature male to 8 mature females.

Short-finned pilot whales are larger members of the dolphin group reaching average lengths of 12 feet (3.7 m) for females and 18 feet (5.5 m) for males with maximum male size of 24 feet (7.3 m). Adult weight is 2200 to 6600 pounds (1000 to 3000 kg).

They have a bulbous melon head with no discernable beak. Their dorsal fin is located far forward on the body and has a relatively long base. Body color is black or dark brown with a large gray saddle behind the dorsal fin.

They are polygynous (males have more than one mate) and are often found in groups with a ratio of one mature male to about every eight mature females. Males generally leave their birth school, while females may remain in theirs for their entire lifetime.

Gestation lasts approximately 15 months while lactatation lasts for at least two years. The last calf born to a mother may be nursed for as long as 15 years. The calving interval is five to eight years, but older females do not give birth as often as younger females. Maturity occurs around 10 years of age and maximum longevity is 45 years for males and 60 years for females.

Short-finned pilot whales often occur in groups of 25 to 50 animals.

They feed primarily on squid, but they may also feed on octopus and fish, all from moderately deep water of 1000 feet (305 m) or more. When they are swimming and probably looking for food, pilot whales form ranks that can be over a kilometer (more than 1/2 mile) long.

Habitat

They prefer warmer tropical and temperate waters and can be found at varying distances from shore but typically in deeper waters. Areas with a high density of squid are their primary foraging habitats.

Distribution

Short-finned pilot whales are found primarily in deep waters throughout tropical and subtropical areas of the world.

Population Trends

Short-finned pilot whales were once commonly seen off Southern California, with an apparently resident population around Santa Catalina Island. After a strong El Niño in 1982-83, short-finned pilot whales virtually disappeared from this area. The most recent stock assessment reports with population estimates are available on our website.

Threats

Conservation Efforts

In 1997, we implemented the Pacific Offshore Cetacean Take Reduction Plan, which requires the use of pingers and 6-fathom net extenders in the CA/OR drift gillnet fishery to reduce bycatch of cetaceans, including short-finned pilot whales. The Pacific Offshore Cetacean Take Reduction Team continues to meet and recommend measures to further reduce bycatch and achieve MMPA goals.

In 2005, we convened the Atlantic Pelagic Longline Take Reduction Team to address bycatch of both short-finned and long-finned pilot whales in the mid-Atlantic region of the Atlantic pelagic longline fishery. The team submitted their recommendations to us in 2006. A proposed rule to implement the pelagic longline take reduction plan was published on June 24, 2008. We published a final rule to implement the PLTRP [pdf] (74 FR 23349) on May 19, 2009.

Regulatory Overview

This species is protected under the Marine Mammal Protection Act of 1972 as amended.

Taxonomy

Kingdom: Animalia
Phylum: Chordata
Class: Mammalia
Order: Cetacea
Family: Delphinidae
Genus: Globicephala
Species: macrorhynchus

The long-finned pilot whale (Globicephala melas) is another species of pilot whale.

Key Documents

(All documents are in PDF format.)
Title Federal Register Date
Pacific Offshore Cetacean Take Reduction Plan (POCTRP) Interim Final Rule to Amend Pinger Specifications 64 FR 3431 01/22/1999
POCTRP Final Rule to Require New Training, Equipment, and Gear Modifications for CA/OR Drift Gillnet Fishery 62 FR 51805 10/03/1997
Stock Assessment Reports n/a various

More Information

Updated: January 15, 2015