WHATSTHATFISH
Sea slugs & snails

Giant Tun

Tonna galea

Also known as: Giant Tun Shell, Helmet Tun, Oily Tun, Tun Shell, Tonna olearium

Adult
@blogie · Dayang Beach Dive Site, Talikud Island, Island Garden City of Samal, Philippines · April 20121 / 1
01

Overview

Found nocturnally, over mud and sandy bottoms of coral and rocky reefs.
They feed on sea cucumbers.

These are a small family, their large shells have a distinct spiral.
They feed on sea cucumbers by sucking the food in with their large proboscis.
These large animals are able to burrow themselves completely in sand to escape predators.

02

How to identify

COLOURS
Body shape
shells

Tap any trait to see other fish that share it.

03

Habitat & where to find it

  • Range · Pacific Ocean, Atlantic Ocean, Mediterranean
  • Country only · 1
LIVES IN

Found nocturnally, over mud and sandy bottoms of coral and rocky reefs.

04

Adult photos 1

05

Discussion

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    ALL STAGES
    FOR THE MARINE-BIOLOGY CURIOUS

    Deep dive

    Taxonomy

    1. kingdomAnimalia
    2. phylumMollusca
    3. classGastropoda
    4. orderLittorinimorpha
    5. familyTonnidae
    6. genusTonna
    7. speciesTonna galea (Linnaeus, 1758)

    SourcesWoRMSSeaLifeBase

    06

    More in the family

    Littorinimorpha