THE ANIMAL FILES

Loggerhead sea turtle

Caretta caretta

Strong jaws meet a life that begins among floating weeds.

The loggerhead sea turtle is associated with a powerful head and hard prey, but its habitat changes as it grows. Young turtles can use floating Sargassum communities, while later stages also feed in coastal waters. A beach nest links this marine life back to land.[1]

Follow the evidence ↓
Loggerhead sea turtle
Image: ukanda · Commons · CC BY 2.0
Food tools
Powerful crushing jaws[1]
Early habitat
Floating Sargassum communities[1]
Nesting
Eggs buried on beaches[1]

A hard-food toolkit

The diet includes many bottom-living invertebrates, such as shelled molluscs and horseshoe crabs. Strong jaws help crush food, while projecting scales along the front edges of the forelimbs can help manipulate and tear it.[1]

Floating habitat is still habitat

Sargassum mats hold a community of small organisms that provide food and cover for young turtles. Open-ocean travel can consequently include encounters with structured, floating habitat, rather than occurring only in empty-looking water.[1]

A marine animal’s land stage

Females place eggs in beach sand, and hatchlings emerge before entering the sea. Hatchlings move toward the brighter natural horizon at the water’s edge. An adult’s marine habitat does not eliminate a land-based developmental requirement. Conditions at the nest and along the short route to water are parts of the same life cycle.[1]

A COMMON MIX-UP

Does a sea turtle spend every life stage underwater?

No. Eggs develop in beach nests, and hatchlings must travel to the water. The common name does not define every stage.[1]

TRY A LITTLE REASONING

Why could removing floating seaweed affect more than plant material?

Reveal the explanation

It also removes or changes a community used for food and cover. Young turtles can depend on the structure and its associated organisms.[1]

Sources & editorial notes

Adapted and translated from the cited Wikipedia revisions, with source-linked reasoning. Image credit and licence are listed separately above.

Adapted and translated from Wikipedia contributors; exact revisions are linked below. CC BY-SA 4.0

  1. Wikipedia contributors — Caretta caretta (adapted and translated; exact revision)
  2. NCBI Taxonomy — Caretta caretta (identity and game lineage)

Last fact check:

One discovery leads to another

Green sea turtleThe green in the name is not a promise about the shell.Chelonia mydas ↗Hawksbill sea turtleA narrow hooked beak reaches food among reef structures.Eretmochelys imbricata ↗Olive ridley sea turtleA nesting crowd begins in the sea.Lepidochelys olivacea ↗