Slug Finder

A Field Guide to Nudibranchs and Sea Slugs of California’s Central Coast

Explore the extraordinary diversity of nudibranchs and other sea slugs found in the kelp forests, rocky reefs, and tidepools of Monterey Bay and Carmel. This app is designed for scuba divers, tidepoolers, marine biology enthusiasts, and anyone curious about these striking and ecologically important invertebrates.

Use visual filters—by size, color, and shape—to help identify species based on external traits. Each profile includes scientific and common names, habitat descriptions, diet, size range, and high-resolution images of adult and juvenile forms when available.

Built for field use, the app works fully offline and includes a sightings log with geotagging and note-taking features. Whether you're tracking your observations over time or contributing to local biodiversity monitoring efforts, the app helps you stay organized and informed.

The included “Nudibranch facts” section provides accessible explanations of nudibranch evolution, reproduction, defense mechanisms, and sensory biology—perfect for learners at all levels. You’ll also find quiz modes and matching games to test your ID skills.

Whether you're conducting a survey dive, photographing tidepool fauna, or just fascinated by the beauty and complexity of sea slugs, this app is your portable reference and learning tool for California’s temperate marine ecosystems.