Question

Write a short note on:

Marine biomes

Answer 1

1. The biomes we find in ocean/sea water are called a marine biome. Approximately 70% of the earth's surface is covered by oceans.
2. There are three layers in Marine biomes :

Euphotic Layer :

1.  It is the top layer of the Marine biome.
2. The sunlight reaches there.
3.  It is around 200 m deep.
4. It is home to many fishes, sea turtles jellyfish, seals, coral, zooplankton, and mangroves.

Disphotic Layer :

1. It is the middle layer.
2. Some light penetrates to the bottom part.
3. It is about 1000 m deep from the mean sea level.
4. Except few phytoplankton sunk from the upper layer, plants are not found here
5.  In this layer, animals are adapted to darkness, cold water, and high pressure.
6. Swordfish, eels, sea dragons, cattle fish, squid, and wolfish are found.

Aphotic layer :

1. It is the deepest layer.
2.  It ranges from 1000 m to 4000 m depth.
3. No light penetrates here, therefore there is no living plant life in this layer.
4. Bioluminescent jellyfish, angler fish, hatchet fish, elusive giant squid, etc., are found in this layer.
5.  Beyond this layer lies the darkest and the deepest zone extending up to the seafloor. Here animals are adapted to survive on detritus under even greatest pressure.