Decapod Crustaceans under the Law
12 July 2026
How was your last lobster bisque or thermidor? What is a crayfish anyway, a sentient animal with feelings to be regarded, or just a large marine woodlouse to be tossed into a pot of boiling water, alive, because they’re quite complicated and sometimes expensive to kill humanely?
Under the Animal Welfare (Sentience) Act 2022 the government gave legal recognition to decapod crustaceans as sentient beings. The Animal Law Foundation has now written to the Welsh Government to advise on what this means for the killing of crabs and lobsters in Wales.
Summary
The letter reproduced below, addressed to Mr Gruffydd, cabinet minister in the Welsh Government on behalf of The Animal Law Foundation and co-signatory animal protection organisations and legal experts, calls for urgent regulatory guidance on the killing of decapod crustaceans (such as crabs and lobsters) in Wales.
The letter’s central argument rests on the legal recognition of decapod crustaceans as sentient beings under Section 5(1)(c) of the Animal Welfare (Sentience) Act 2022. The authors argue this recognition has direct legal implications for how these animals must be treated under the Welfare of Animals at the Time of Killing (Wales) Regulations 2014 (WATOK).
Specifically, the letter notes that Schedule 4 of WATOK already extends welfare protections at the time of killing to invertebrates including decapod crustaceans. Paragraph 4 of that Schedule makes it an offence to restrain, stun, or kill such animals in ways causing avoidable pain, distress, or suffering, and requires that anyone carrying out these acts have the necessary knowledge and skill to do so humanely.
The letter draws on the London School of Economics review that underpinned the original sentience recognition, which identified humane killing methods for decapods—such as double spiking for crabs, whole-body splitting for lobsters, or specialist electrical stunning devices—as being fast (whole-body splitting taking no more than 10 seconds when performed competently). By contrast, the letter highlights that boiling crustaceans alive, a widespread practice in restaurants and homes, can take several minutes and causes significant suffering. Since humane alternatives exist, the authors argue boiling alive constitutes “avoidable” suffering, and is therefore already unlawful under the combined effect of sentience recognition and WATOK’s existing provisions.
The letter strengthens this argument by pointing to the UK Government’s Animal Welfare Strategy commitment (as of December 2025) to publish guidance on which killing methods for decapods comply with existing welfare-at-time-of-killing law, explicitly including clarification that live boiling is unacceptable. Because Wales operates under the same underlying legal framework as England on this point, the authors contend that this UK-level interpretation is highly relevant and should be mirrored in Wales.
In its concluding “next steps” section, the letter appeals to the newly elected Welsh Government and its manifesto commitment to produce a renewed Animal Health and Welfare Plan. It urges the government to act urgently by issuing clear guidance confirming that decapod crustaceans are protected under WATOK, and that consequently they should not be boiled alive. The letter frames this as a long-overdue reform and calls on the government to take decisive action.
In essence, the letter is a legal and evidentiary appeal urging Welsh ministers to formally clarify—via guidance rather than new legislation—that existing animal welfare law already prohibits the live-boiling of crustaceans, using the precedent of sentience law, scientific evidence on humane slaughter methods, and an emerging parallel commitment from the UK government as its main pillars of support.
