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NEXT UP: No. 2 seed Midgardia Seastar (Midgardia xandaros) vs No. 15 seed Hydra (Hydra vulgaris). This battle is a team effort from myself & @je_light #2021MMM
@je_light Midgardia Seastar is a relatively new species, described only 50 years ago! M. Seastar is an echinoderm (star fish, sea urchins & sea cucumbers) with lots of arms - in fact, it has the longest arms of any other known starfish (Downey 1972)! tinyurl.com/m9y6m3fa #2021MMM 
@je_light Midgardia Seastars can have 12 long arms, each up to 600 mm in length (that's 1.76 stoats!) & can reach over 130 cm long from arm tip to arm tip (3.8 stoats!) #StoatsAsMeasurement #2021MMM
