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New Horizons has a total of 40 deep-sea creatures in all. In the Northern Hemisphere, 20 sea creatures can be caught in April, 2 of which is new in April and 3 will leave after April. In the Southern Hemisphere, 22 sea creatures can be caught in April, 3 of which are new and 2 will leave after April.

New Horizons critter lists
Fish
JanuaryFebruaryMarchAprilMayJuneJulyAugustSeptemberOctoberNovemberDecemberAll
Bugs
JanuaryFebruaryMarchAprilMayJuneJulyAugustSeptemberOctoberNovemberDecemberAll
Deep-sea creatures
JanuaryFebruaryMarchAprilMayJuneJulyAugustSeptemberOctoberNovemberDecemberAll

Northern hemisphere[]

Available in April[]

Name Image Price Shadow size Swimming speed Time
Seaweed 600 Large Stationary All day
Sea cucumber 500 Medium Very slow All day
Sea star 500 Small Very slow All day
Sea anemone 500 Large Stationary All day
Sea slug 600 Tiny Very slow All day
Pearl oyster 2800 Small Medium All day
Scallop 1,200 Medium Slow All day
Whelk 1,000 Small Slow All day
Turban shell 1,000 Small Slow All day
Chambered nautilus 1,800 Medium Medium 4 PM – 9 AM
Octopus 1,200 Medium Slow All day
Umbrella octopus 6,000 Small Fast All day
Firefly squid 1,400 Tiny Slow 9 PM – 4 AM
Dungeness crab 1,900 Medium Medium All day
Snow crab 6,000 Large Fast All day
Acorn barnacle 600 Tiny Stationary All day
Spider crab 12,000 Huge Quick All day
Mantis shrimp 2,500 Small Medium 4 PM – 9 AM
Lobster 4,500 Large Fast All day
Sea pineapple 1,500 Small Slow All day

New in April[]

Name Image Price Shadow size Swimming speed Time
Lobster 4,500 Large Fast All day
Sea pineapple 1,500 Small Slow All day

Leaving after April[]

Name Image Price Shadow size Swimming speed Time
Sea cucumber 500 Medium Very slow All day
Snow crab 6,000 Large Fast All day
Spider crab 12,000 Huge Quick All day

Southern hemisphere[]

Available in April[]

Name Image Price Shadow size Swimming speed Time
Seaweed 600 Large Stationary All day
Sea star 500 Small Very slow All day
Sea anemone 500 Large Stationary All day
Sea slug 600 Tiny Very slow All day
Pearl oyster 2,800 Small Medium All day
Mussel 1,500 Small Slow All day
Oyster 1,100 Small Medium All day
Scallop 1,200 Medium Slow All day
Whelk 1,000 Small Slow All day
Turban shell 1,000 Small Slow All day
Abalone 2,000 Medium Medium 4 PM – 9 AM
Chambered nautilus 1,800 Medium Medium 4 PM – 9 AM
Octopus 1,200 Medium Slow All day
Umbrella octopus 6,000 Small Fast All day
Gazami crab 2,200 Medium Medium All day
Acorn barnacle 600 Tiny Stationary All day
Sweet shrimp 1,400 Small Slow 4 PM – 9 AM
Mantis shrimp 2,500 Small Medium 4 PM – 9 AM
Spiny lobster 5,000 Large Fast 9 PM – 4 AM
Giant isopod 12,000 Medium Fast 9 AM – 4 PM, 9 PM – 4 AM
Spotted garden eel 1,100 Small Slow 4 AM – 9 PM
Venus' Flower Basket 5,000 Medium Fast All day

New in April[]

Name Image Price Shadow size Swimming speed Time
Seaweed 600 Large Stationary All day
Spiny lobster 5,000 Large Fast 9 PM – 4 AM
Venus' Flower Basket 5000 Medium Fast All day

Leaving after April[]

Name Image Price Shadow size Swimming speed Time
Giant isopod 12,000 Medium Fast 9 AM – 4 PM, 9 PM – 4 AM
Spotted garden eel 1,100 Small Slow 4 AM – 9 PM