Alien Sharks is back on Shark Week to find the strangest shark in the waters. Dr. Craig O'Connoll travels to the Bass Strait for sawsharks, while Victoria Elena Vasquez and Dr. David Ebert go into deep water in Tokyo Bay to find the goblin shark.

Along the coastline of LA, great white sharks are increasing and they seem to be hunting out of season. Dr. Chris Lowe returns to Shark Week to find out why. His investigation takes him to Guadalupe Island, off Mexico, where he finds the answer.

For decades, great white numbers were declining in the waters around New York but now the seals are back! Are the great whites far behind? Shark Week's Dr. Craig O'Connell tries to find the answers and shows the future with great whites in New York.