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Ecology Summary - Halichoerus grypus
SeaLifeBase
Ecology of Halichoerus grypus
 
Main Ref. Jefferson, T.A., S. Leatherwood and M.A. Webber, 1993
Remarks Found in coastal areas; they haul-out on isolated beaches and rocky ledges of islands. Feeds on a wide variety of fishes and invertebrates and occasionally take seabirds (Ref. 1394).

Aquatic zones / Water bodies

Marine - Neritic Marine - Oceanic Brackishwater Freshwater
Marine zones / Brackish and freshwater bodies
  • supra-littoral zone
  • littoral zone
  • sublittoral zone
  • epipelagic
  • mesopelagic
  • epipelagic
  • abyssopelagic
  • hadopelagic
  • estuaries/lagoons/brackish seas
  • mangroves
  • marshes/swamps
  • rivers/streams
  • lakes/ponds
  • caves
  • exclusively in caves
Highighted items on the list are where Halichoerus grypus may be found.

Habitat

Substrate Hard Bottom: rocky;
Substrate Ref. Jefferson, T.A., S. Leatherwood and M.A. Webber, 1993
Special habitats
Special habitats Ref.

Associations

Ref. Jefferson, T.A., S. Leatherwood and M.A. Webber, 1993
Associations
Associated with
Association remarks
Parasitism

feeding

Feeding type mainly animals (troph. 2.8 and up)
Feeding type Ref. Jefferson, T.A., S. Leatherwood and M.A. Webber, 1993
Feeding habit hunting macrofauna (predator)
Feeding habit Ref. Jefferson, T.A., S. Leatherwood and M.A. Webber, 1993

Trophic Level(s)

Estimation method original sample unfished population Remark
Troph s.e. Troph s.e.
From diet composition 4.50 0.80 Troph of juv./adults.
From individual food items 4.49 0.96 Trophic level estimated from a number of food items using a randomized resampling routine.
Ref. Prime, J.H. and P.S. Hammond, 1990
(e.g. 9948)
(e.g. cnidaria)
Comments & Corrections
 
 
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