A Wobster is a catchable sea creature found in the Shipwrecked DLC. Wobsters spawn from Wobster Dens, which house one Wobster each. Wobsters are nocturnal, and will only come out at Dusk, will stay out all through the Night, and will retreat back to their dens when the next day begins. Players who get too close will also cause them to be scared and go back to their dens.
They can be caught using Sea Traps or a Trawl Net. They are attracted to Limpets, which can be used to bait the trap to improve chances of catching them. Leaving them caught in a trap will cause them to starve to death in 1.5 game days, dropping one Rot instead. Wobsters that have been dropped on land by the player will not move and will die after a short amount of time.
When caught alive, they can be used in Crock Pot recipes. As inventory items, they can be murdered by right-clicking them to produce a Dead Wobster. The dead version can only be eaten raw or cooked, and cannot be used in Crock Pot recipes.
The Wobster was introduced to Don't Starve Together in Return of Them. They spawn from Wobster Mounds during Dusk and Night. They can be used alive in a Crock Pot for their 1.0 fish and 1.0 meat value. Aside from all the fish and meat dishes they can be used for, they have two exclusive recipes: Lobster Bisque and Lobster Dinner. While both recipes excel at healing by granting 60 HP, the latter also gives 50 sanity and is Maxwell's favorite dish, providing him with additional 15 Hunger upon consumption.
They behave mostly like Ocean Fishes, as they can be caught with a Sea Fishing Rod and weigh between 153.67 and 307.34. Unlike the ocean fish, they don't resist and can easily be pulled with consistent reeling. If left on the ground for a small amount of time, they break free from their shock and hurry back into the nearest sea water similar to the behavior of released rabbits. They can be baited by any lure, but they have a special apathy towards seeds. Trying to catch them with seeds or without any lure applies a 0.25 multiplier to the attractiveness. As with other seawater fish, they can be kept alive inside a Tin Fishin' Bin, which can keep them fresh indefinitely. They can be weighed by the Pocket Scale and those that weigh in the top 30% percentile of their species can be gifted to the Crabby Hermit for her 5 Heavy Fish quest. They can also be displayed inside a Fish Scale-O-Matic.
A Dead Wobster is obtained by killing a Wobster. It can be cooked over a fire, but cannot be used in the Crock Pot.
A Delicious Wobster is obtained from cooking a Wobster. It cannot be used in the Crock Pot.
Since Dead Wobsters and Delicious Wobsters fill the same amount of Hunger and Health, and since only the live Wobster can be used in Crock Pot dishes, the only reason to cook a Wobster is if the player wishes to keep it fresh for longer.
To restore a live Wobster in the inventory to full freshness, it can be fed any food in the fish or meat category (including Monster Meat and Jellyfish). It can also eat Blubber or Eggs but not any Fruits or Vegetables.
Being able to only use live Wobsters in the Crock Pot is a reference on how lobsters are often cooked in real life as they are put in boiling water alive.
The name, as implied by Wilson's quote, may be a reference to the Looney Tunes character Elmer Fudd's way of speaking, particularly when he refers to Bugs Bunny as a "Wascally Wabbit".
Wobsters were introduced to Don't Starve Together in the She Sells Sea Shells update. While the Wobsters retain their name from Shipwrecked, they have a darker coloration, and the two Wobster recipes that were ported from Shipwrecked were renamed as Lobster Bisque and Lobster Dinner.