Definition of turtle grass in US English:

turtle grass


  • A submerged marine flowering plant found in the Caribbean, with long grasslike leaves.

    Thalassia testudinum, family Hydrocharitaceae

    • ‘Turtle grass was reported at depths deeper than 30 feet in clear waters of the Bahamas and only to 6 feet in murky conditions.’
    • ‘The fish had driven down deep in the turtle grass and sea weeds trying to hide.’