Pacific Coast Tick Dermacentor occidentalis

This tick is a tiny menace measuring just 4.5 mm before feeding—barely visible to the naked eye—but don't let the size fool you. These silvery-gray arachnids thrive along the coastal California biome and readily feed on humans, making them a common concern for anyone spending time outdoors in the region. Despite their minuscule size, they pack a significant impact on local ecology and human health. They're important vectors of disease and key players in coastal ecosystems, even if outdoor enthusiasts in California would prefer they stay far away.