Scientific Name: Nassarius spp.
Common Name: Nassa mud snails, Dog whelks

Size: 1 – 3 cm
Depth Range: 0 – 40 m
Habitat: Sandy and muddy substrates in coastal waters, often near seagrass beds or coral reef lagoons
Diet: Scavengers; feed on organic debris and carrion, playing a key role in recycling nutrients in the marine ecosystem
Reproduction: Separate sexes; females lay egg capsules in the sand or on hard surfaces
Fun Fact: Nassa mud snails have a keen sense of smell, quickly locating food sources by detecting chemical cues in the water.

Observation Tip: Check sandy or silty areas at low tide or while snorkeling in shallow water. You may spot their small, pointed shells moving slowly across the bottom!