There is and There are

There are ____________________ blue fish in the sea , but there arent' ____________________ red fish . There is ____________________ octopus next to ____________________ jellyfish . Luckily , there aren't ____________________ sharks ! Are there ____________________ whales ? Yes , there are . There are ____________________ whales behind the turtles . Is there ____________________ starfish ? No , there isn't a starfish , but there is ____________________ sea horse , a crab and ____________________ dolphins .