To start, players in the Northern Hemisphere can find 24 different species during July, and one, Seaweed, will be leaving at the end of the month. Here is a list of all of those currently-available Animal Crossing: New Horizons sea creatures:
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Animal Crossing: New Horizons - July Sea Creatures (Northern Hemisphere) Abalone: 4pm - 9am | Large Shadow | 2,000 Bells Acorn Barnacle: All Day | Small Shadow | 600 Bells Gazami Crab: All Day | Medium Shadow | 2,200 Bells Giant Isopod: 9am - 4pm & 9pm - 4am | Large Shadow | 12,000 Bells Gigas Giant Clam: All Day | Large Shadow | 15,00 Bells Horseshoe Crab: 9pm - 4am | Medium Shadow | 2,500 Bells Mantis Shrimp: 4pm - 9am | Medium Shadow | 2,500 Bells Moon Jellyfish: All Day | Small Shadow | 600 Bells Mussel: All Day | Small Shadow | 1,500 Bells Octopus: All Day | Large Shadow | 1,200 Bells Pearl Oyster: All Day | Medium Shadow | 2,800 Bells Scallop: All Day | Large Shadow | 1,200 Bells (Catch to spawn Pascal in New Horizons) Sea Anemone: All Day | Large Shadow | 500 Bells Sea Grapes: All Day | Medium Shadow | 900 Bells Sea Pineapple: All Day | Medium Shadow | 1,500 Bells Sea Slug: All Day | Small Shadow | 600 Bells Sea Star: All Day | Medium Shadow | 500 Bells Sea Urchin: All Day | Medium Shadow | 1,700 Bells Seaweed: All Day | Large Shadow | 600 Bells Slate Pencil Urchin: 4pm - 9am | Large Shadow | 2,00 Bells Spotted Garden Eel: 4am - 9pm | Medium Shadow | 1,100 Bells Tiger Prawn: 4pm - 9am | Large Shadow | 3,000 Bells Vampire Squid: 4pm - 9am | Large Shadow | 10,000 Bells (Not the same as the Squid that can be found by fishing in New Horizons) Whelk: All Day | Medium Shadow | 1,000 Bells...