Horseshoe Crab• Months — Northern: July to September
• Months — Southern: January to March
• Hours: 9PM to 4AM
• Sell Price: 2500 Bells
• Speed: Normal
Lobster• Months — Northern: April to June, December to January
• Months — Southern: June to July, October to November
• Hours: All Day
• Sell Price: 4500 Bells
• Speed: Fast
Mantis Shrimp• Months: All Year
• Hours: 4PM to 9AM
• Sell Price: 2500 Bells
• Speed: Normal
Moon Jellyfish• Months — Northern: July to September
• Months — Southern: January to March
• Hours: All Day
• Sell Price: 600 Bells
• Speed: Slow
Mussel• Months — Northern: June to December
• Months — Southern: December to June
• Hours: All Day
• Sell Price: 1500 Bells
• Speed: Still
Octopus• Months: All Year
• Hours: All Day
• Sell Price: 1200 Bells
• Speed: Normal
Oyster• Months — Northern: September to February
• Months — Southern: March to August
• Hours: All Day
• Sell Price: 1100 Bells
• Speed: Slow
Pearl Oyster• Months: All Year
• Hours: All Day
• Sell Price: 2800 Bells
• Speed: Fast
Red King Crab• Months — Northern: November to March
• Months — Southern: May to September
• Hours: All Day
• Sell Price: 8000 Bells
• Speed: Fast
Scallop• Months: All Year
• Hours: All Day
• Sell Price: 1200 Bells
• Speed: Normal
Sea Anemone• Months: All Year
• Hours: All Day
• Sell Price: 500 Bells
• Speed: Still
Sea Cucumber• Months — Northern: November to April
• Months — Southern: May to October
• Hours: All Day
• Sell Price: 500 Bells
• Speed: Slow
Sea Grapes• Months — Northern: June to September
• Months — Southern: December to March
• Hours: All Day
• Sell Price: 900 Bells
• Speed: Still
Sea Pig• Months — Northern: November to February
• Months — Southern: May to August
• Hours: 4PM to 9AM
• Sell Price: 10000 Bells
• Speed: Medium
Sea Pineapple• Months — Northern: April to August
• Months — Southern: October to February
• Hours: All Day
• Sell Price: 1500 Bells
• Speed: Still
Sea Slug• Months: All Year
• Hours: All Day
• Sell Price: 600 Bells
• Speed: Slow
Sea Star• Months: All Year
• Hours: All Day
• Sell Price: 500 Bells
• Speed: Still
Sea Urchin• Months — Northern: May to September
• Months — Southern: November to March
• Hours: All Day
• Sell Price: 1700 Bells
• Speed: Still
Seaweed• Months — Northern: October to July
• Months — Southern: April to January
• Hours: All Day
• Sell Price: 600 Bells
• Speed: Still
Slate Pencil Urchin• Months — Northern: May to September
• Months — Southern: November to March
• Hours: 4PM to 9AM
• Sell Price: 2000 Bells
• Speed: Normal
Snow Crab• Months — Northern: November to April
• Months — Southern: May to October
• Hours: All Day
• Sell Price: 6000 Bells
• Speed: Fast
Spider Crab• Months — Northern: March to April
• Months — Southern: September to October
• Hours: All Day
• Sell Price: 12000 Bells
• Speed: Fast
Spiny Lobster• Months — Northern: October to December
• Months — Southern: April to June
• Hours: 9PM to 4AM
• Sell Price: 5000 Bells
• Speed: Normal
Spotted Garden Eel• Months — Northern: May to October
• Months — Southern: November to April
• Hours: 4AM to 9PM
• Sell Price: 1100 Bells
• Speed: Normal
Sweet Shrimp• Months — Northern: September to February
• Months — Southern: March to August
• Hours: 4PM to 9AM
• Sell Price: 1400 Bells
• Speed: Normal
Tiger Prawn• Months — Northern: June to September
• Months — Southern: December to March
• Hours: 4PM to 9AM
• Sell Price: 3000 Bells
• Speed: Normal
Turban Shell• Months — Northern: March to May, September to December
• Months — Southern: March to June, September to November
• Hours: All Day
• Sell Price: 1000 Bells
• Speed: Slow
Umbrella Octopus• Months — Northern: March to May, September to November
• Months — Southern: March to May, September to November
• Hours: All Day
• Sell Price: 6000 Bells
• Speed: Normal
Vampire Squid• Months — Northern: May to August
• Months — Southern: November to February
• Hours: 4PM to 9AM
• Sell Price: 10000 Bells
• Speed: Fast
Venus' Flower Basket• Months — Northern: October to February
• Months — Southern: April to August
• Hours: All Day
• Sell Price: 5000 Bells
• Speed: Fast
Whelk• Months: All Year
• Hours: All Day
• Sell Price: 1000 Bells
• Speed: Slow
Similar to bugs and fish, availability and variations depending on the time of year and hemisphere of your island. Any caught creatures can also be donated to Blathers and displayed in the Museum.
Tips!- To catch the speedy swimmers, we would recommend pressing Y when you are directly above the shadow, then spamming A as quickly as possible to keep up with the creature.
- Pearls are not officially recognized as a sea creature and do not appear in your Critterpedia, nor can they be donated to the Museum.
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***If you are hosting other players on your island and have a fenced route/area, Please note that players are able to dive off of the airport pier if wearing a wetsuit to evade restricted zones, so please be careful.