Ammodytidae, commonly known as sand lances or sand eels, are a family of fish found primarily in the northern Atlantic and Pacific Oceans. They are characterized by their elongated bodies and pointed snouts, which help them burrow into sandy substrates. These fish typically inhabit shallow coastal waters and are an important food source for various marine predators, including seabirds and larger fish. Sand lances are known for their unique swimming style, which involves rapid bursts of speed to escape from threats. They primarily feed on small plankton and are often found in schools. Their ability to bury themselves in the sand provides protection from predators and harsh environmental conditions.