The sea alms tradition is one of the local wisdoms of coastal communities that contains religious, social, cultural, and environmental values. One important component of this tradition is offerings, which consist of various plants with symbolic meanings and functions in the ritual. This study aims identify the types of offerings and plants used in the sea alms tradition in Glondong Gede Village, Tuban Regency, as well as integrate the identification results into an e-catalog learning medium. This research used descriptive qualitative approach. The primary informant for this study was a fisherman who also participates in the *sedekah laut* (sea offering) tradition in Glondong Gede Village. Data analysis employed the Miles and Huberman model, comprising data collection, data condensation, data display, and conclusion drawing. The identification process revealed 17 plant species belonging various families, including Solanaceae, Cucurbitaceae, Asteraceae, Brassicaceae, Arecaceae, Musaceae, Oleaceae, Annonaceae, Rosaceae, Convolvulaceae, Fabaceae, Amaryllidaceae, and Pandanaceae. These plants include chili peppers, cucumbers, lettuce, carrots, tomatoes, cabbage, coconuts, banana leaves, eggplants, jasmine, ylang-ylang, roses, sweet potatoes, peanuts, shallots, garlic, and pandan leaves. Each plant holds symbolic significance, representing—among other things—protection against misfortune, purity, fertility, prosperity, gratitude, tranquility, and the hope for abundant fortune. The identified data were subsequently integrated into an e-catalog containing local names, scientific names, taxonomic classifications, morphological descriptions, and the symbolic meanings of the plants. This e-catalog has the potential to serve as a contextual, local wisdom-based learning resource for biology, particularly regarding topics such as plant diversity and the classification of living organisms.