Here's a Daily Grail article discussing a paper by Chandra Wickramasinghe and others, which considers evidence for the old proposal of Hoyle and Wickramasinghe that evolution on earth has been influenced by extraterrestrial organisms - not only viruses and bacteria, but also "more complex eukaryotic cells, fertilised ova and seeds". In particular they suggest the possibility that octopuses arrived on earth as frozen eggs. Others are unconvinced.
https://www.dailygrail.com/2018/05/are-o...years-ago/
https://www.dailygrail.com/2018/05/are-o...years-ago/