Alex Mustard / Mysid shrimps (unidentified) swarm above the seabed in a current. Seraya, Tulamben, Bali, Indonesia. Java Sea

Albert Lleal / Opossum Shrimp (Mysis sp) group, Girona, Spain

Fred Bavendam / Opossum Shrimp (Mysis sp), York, Maine

Jacob Guy / Idomysis shrimp (Idiomysis tsurnamali bacescu) swarm swimming against current in reef, Indonesia, Pacific Ocean.

David Fleetham / A mass of plankton attracted to lights, the majority here are Mysid shrimp (Mysidae) and the long rods are Arrow Worms (Chaetognatha), Yap, Micronesia, Pacific Ocean.