Eric Baccega / Shoebill stork (Balaeniceps rex) in the swamps of Mabamba, Lake Victoria, Uganda, February.

Jane Burton / Blue and white Burmese-cross kitten rubbing against sooty-fawn dwarf Rex rabbit.

Alex Mustard / Emperor shrimp (Periclimenes imperator / Zenopontonia rex) hitchhiking on large t-bar nudibranch (Ceratosoma trilobatum) The shrimp gains food source and protection on the toxic seaslug. Bitung, North...

Jeff Rotman / Symbiotic emperor shrimp (Periclimenes imperator / Zenopontonia rex) living in the gills of a spanish nudibranch (Hexabranchus sanguineus) Red Sea, Egypt

Ingo Arndt / Shoebill (Balaeniceps rex), Uganda

Cheryl-Samantha Owen / Whale headed stork (Balaeniceps rex), Lake Albert, Uganda, East Africa

Edwin Giesbers / Shoebill / Whale headed stork (Balaeniceps rex) head portrait, captive

Christophe Courteau / Whale headed / Shoebill stork (Balaeniceps rex) catching a Lungfish (Protoperus sp) in the swamps of Mabamba, Lake Victoria, Uganda / Bec en sabot, dipneuste, Lac Victoria, Ouganda

Christophe Courteau / Whale headed / Shoebill stork (Balaeniceps rex) in flight over the swamps of Mabamba, Lake Victoria, Uganda / Bec en sabot, Lac Victoria, Ouganda

Juergen Freund / Imperial / Emperor shrimp (Periclimenes imperator / Zenopontonia rex) on an Eyed / Leopard sea cucumber (Bohadschia argus). Lembeh Strait, North Sulawesi, Indonesia

Juergen Freund / Imperial / Emperor shrimp (Periclimenes imperator / Zenopontonia rex) on an Eyed / Leopard sea cucumber (Bohadschia argus). Lembeh Strait, North Sulawesi, Indonesia.

Juergen Freund / Imperial / Emperor shrimps (Periclimenes imperator / Zenopontonia rex) on a sea cucumber. Lembeh Strait, North Sulawesi, Indonesia.