Diving into the deep sea! Crossword

Tasty type of marine algae
The Giant Pacific Garbage Patch is filled of this
Funny-looking fish with a curly tail and equine face
Largest creature to have ever existed (Sea Mammal)
Collective noun for fish
Another word for global warming
Ocean partially covered by sea ice
wibbly wobbly sea animal
Flightless sea bird that walks with a waddle
Type of shark that is at the top of the ocean's food chain
Type of dolphin found in the UK, a _____________ nose
World's largest ocean
Another name for the Killer Whale
Fish often eaten with chips
Body of water between the UK and France
Another name for a Sea Cow
The clicking sound that dolphins make when they search for their prey
The Great Barrier Reef is made of this
The rise and fall of the ocean
Underwater boat
Marine reptile with a hard shell
Caused by the wind blowing across the surface of the ocean. Surfers ride them.
Tentacled sea creature
Tiny organisms that many large sea creatures feed on.
_________ Trench is the deepest part of the world's oceans.
Huge destructive wave
What fish use to breath