Yes. Sea animals are lawful even when found dead, because the Quran permits the game of the sea and its food (5:96). Scholars also permit locusts, based on the hadith that two kinds of dead animals are lawful: fish and locusts.
Вам дозволены морская добыча и еда во благо вам и путникам, но вам запрещена охотничья добыча на суше, пока вы находитесь в ихраме. Бойтесь Аллаха, к Которому вы будете собраны.
This is general information, not a fatwa. For your own situation, ask a qualified scholar.
Questions about halal and haram
Can I eat fish that died by itself?
Yes. Sea animals are lawful even when found dead, because the Quran permits the game of the sea and its food (5:96). Scholars also permit locusts, based on the hadith that two kinds of dead animals are lawful: fish and locusts.