Mantis Shrimp

Squilla empusa · Also known as: mantis shrimp, thumb splitter

Burrowing stomatopod of Mid-Atlantic mud bottoms. Fierce little predators sometimes dug up or caught in nets around the bays.

Mantis Shrimp (Squilla empusa) — Ocean City, Maryland
Photo via Wikipedia / Wikimedia Commons — Mantis shrimp

Quick facts

GroupOther
Likelihood nearby★★☆☆☆
Habitats Coastal bays, Salt marsh, Inlet
Seasons (this coast)spring, summer, fall

How to recognize them

  • Elongated, shrimp-like, mottled tan body with a spear-like raptorial claw folded under the head.
  • Large stalked eyes; can deliver a painful strike—handle with respect.

Biology notes

  • Ambush predator living in burrows in muddy bay bottoms.
  • Not a true shrimp (stomatopod), but grouped with crustaceans visitors ask about.

Where to see them around Ocean City

  • Occasionally in dredge/net bycatch or mudflats around coastal bays—uncommon casual find.

When to look

  • Warm season when people dig or net in muddy shallows.

Viewing tips & etiquette

  • Do not hold near your fingers—the “thumb splitter” nickname is earned.

Sources & further reading