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Dr. Henry Choong - My favourite part of the ROM's collections is the... News PhotoArchaeology,Arts Culture and Entertainment,Canada,Computer Chip,Human Interest,Hydra - Polyp Corals,Hydroid,Living Organism,North Atlantic Ocean,Origins,Research,Sea,Toronto,VerticalPhotographer Collection: Toronto Star 2014 Toronto StarTORONTO, ON - MARCH 18: Dr. Henry Choong - My favourite part of the ROM's collections is the Hydrozoa, which is likely the best research collection in existence for shallow-water species, including hydroids from the western North Atlantic and other oceans. Hydroids are predatory organisms, usually colonial, with multiple connected polyps. They belong to the phylum Cnidaria, a group of mostly marine animals that includes corals and jellyfish. This hydroid (Obelia longissima, ROMIZ B4002) originated from Japan and was found in debris from the catastrophic TÅchoku earthquake and tsunami of 2011 that washed ashore in Washington State, USA in 2012. At the ROM, taxonomists Dr. Dale R. Calder and Dr. Henry H.C. Choong conduct research on hydroids collected from the tsunami debris in order to understand the dispersal of marine life and assess the threat of invasive species. Lucas Oleniuk/Toronto Star (Lucas Oleniuk/Toronto Star via Getty Images)