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field guide collection

Beach life and invertebrates

The wrack line, wet sand, jetties and lagoon flats hold a small world of crabs, shrimp, molluscs and other invertebrates. Look closely, leave living animals where they are, and keep the beach wild.

Explore the living island

The wrack line, wet sand, jetties and lagoon flats hold a small world of crabs, shrimp, molluscs and other invertebrates. Look closely, leave living animals where they are, and keep the beach wild.

How to use this field guide

Choose a profile below, then follow the habitat and responsible-viewing links to understand where it fits in the island's ecology.

Explore this section

  • Blue crab

    Identification, habitat and South Padre Island field notes for blue crab.

  • Atlantic ghost crab

    Identification, habitat and South Padre Island field notes for atlantic ghost crab.

  • Hermit crabs

    Identification, habitat and South Padre Island field notes for hermit crabs.

  • Swimming, box and purse crabs

    Identification, habitat and South Padre Island field notes for swimming, box and purse crabs.

  • Mole crabs and beach hoppers

    Identification, habitat and South Padre Island field notes for mole crabs and beach hoppers.

  • Barnacles and jetty life

    Identification, habitat and South Padre Island field notes for barnacles and jetty life.