Seyed Ali Shobayri,
Seyed Ali Shobayri is of mixed Iranian and Scottish descent who found the path of the Ahlul Bayt (a) by his own research. He holds a BA in Islamic Studies from Middlesex University through the Islamic College of London. He also studied at the Hawza Ilmiyya of England and continues Hawza and Islamic studies with private teachers.
Amina Inloes is originally from the US and has a PhD in Islamic Studies from the University of Exeter on Shi'a hadith. She is the program leader for the MA Islamic Studies program at the Islamic College in London and also the Managing Editor of the Journal of Shi'a Islamic Studies.
Eating poisonous food is not halal. The idea is that eating seafood is a blessing we are allowed to partake in (with the appropriate guidelines) without it being extremely complex and that it is one we may make use of and thank Allah for.
Not everything that comes from the ocean is halal unlike what some other sects might claim.
In our jurisprudence for example, one cannot eat fish that doesn’t have scales. Jurists also differ as to the amount of scales which must be present on the fish. For example, some fuqaha say that it is only allowed to eat a fish if MOST of the body has scales, and others say that even a tiny amount of scales is sufficient. It should be noted that prawns are also halal.
The above ruling are based on the ahadith such as the following:
Imam Al-Baqir (peace be upon him) said:
“Eat any fish that has scales, and do not eat what does not have scales."
[Al-Kulayni, Al-Kafi, Vol.6, p. 219]
May Allah grant you success