Miocene shallow-marine cliffs running south from Lisbon along the Costa da Caparica beaches. After winter storms, small black teeth (sand tiger, mako, requiem) wash from cliff lag onto the wide tourist beaches — easy day trip from the city.
Walk the swash zone at low tide between the beach 'Apoio' numbered access points after a winter storm. Sift dark cliff lag near recent slumps.
Frequent buses and ferries from Lisbon to Costa da Caparica. Public beach access at numbered Apoios (1-21).
Surface collection on public beach is fine. Do not dig into the cliffs (protected coastline + falling-debris hazard).
Trophy = headline find · Rare = real score · Uncommon = some trips · Common = most trips.
The beachcomber's bonus round — what else the geology gives up.
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