Salman said the Prophet was asked about locusts and replied, "They are the most numerous of God’s hosts. I neither eat them nor declare them unlawful."
Abu Dawud transmitted it, but Muhyi as-Sunna said it is weak.
Abuz Zubair quoted Jabir’s authority for the statement that God's messenger said, "What the sea throws up and is left by the tide you may eat, but what dies in the sea and floats you must not eat."
Abu Dawud and Ibn Majah transmitted it, but Muhyi as-Sunna said most people hold that it goes no farther back than Jabir.
Ibn ‘Umar reported God’s messenger as saying, "Two types of animals which have died a natural death and two types of blood have been made allowable to us, the two which die a natural death being the fish and the locust, and the two types of blood being the liver and the spleen."