What is the length of the coastline of Gujarat (in $, km$)?

Induced egg laying in fish is achieved by the injection of which of the following?

Identify the correct statements from the following:
$(i)$ Modern techniques are implemented to increase the production of plants and animals in marine habitats.
$(ii)$ $Catla$,$Rohu$,$Mrigal$,and $Hilsa$ are major carp fishes.
$(iii)$ $Hilsa$,$Sardines$,$Rohu$,and $Mrigal$ are marine food fishes.
$(iv)$ Fisheries can be either marine or freshwater.

Identify the odd one out.

Blue revolution is enhancement in production of

What percentage of the world's fish production comes from the sea?