66. The Tadpole Shrimp. Wildlife of the Solway Wildlife of The Solway Firth Number 66. The Tadpole Shrimp (Triops Cancriformis) by Mark Vollers On the Scottish side of the Solway Firth at Caerlaverock in remote brackish estuarine pools lives one of the oldest living species on earth, little changed for more than 200 million years. … Continue reading 66. The Tadpole Shrimp. Wildlife of the Solway