Enaka reports that if a level 18 blows up the pool themselves, anyone can loot the objects. If a higher-level throws the dynamite, looting is only possible by others between (about) level 13 and 19. Loot is reported to be similar to the Outland Daily quest’s Bag of Fishing Treasures, but there are also other items, including drinks and raw fish. The method seems to work with all pools. Only Ez-Thro Dynamites have been confirmed to work. The Goblin Fishing Pole does not work. Fishing skill is not required. Thanks to schmeg and mikaial20 for letting us know.

The looting process is a bug, but I’m told exploding pools were intended. Such a Goblin approach to fishing might hint at the Cataclysm. Time will tell! Further discussion.

1. Use Ez-Thro Dynamite over a pool

2. Pool explodes and new objects appear in the water

3. Objects may be opened, depending on your level

“Lots of new fish and other fun items to catch! Fish are still used to make premium food. New fishing dailies.”

Nothing about any changes to the method of catching fish, but “many of the professions are still deep in development”. Oh, and no aquarium ;-) .

• [Fixed] Weather-Beaten Fishing Hat’s lure can only be used on WotLK fishing poles (Kalu’ak, Jeweled, Bone).
• High Test Eternium Fishing Line +5 enchant displays as +2 on poles [to be fixed in an "upcoming patch"].

Further discussion.

“The ‘Monsterbelly Appetite’ daily fishing quest has changed so it now takes place outside the Violet Hold in Dalaran. The quest still requires a Severed Arm [catch a Bloated Slippery Eel] and has been renamed to ‘Disarmed!’”

Also:

• Using a lure now automatically lures your equipped fishing pole (you no longer apply the lure directly to your pole).
• Sea Turtle jump sound – video (thanks Durth).
• New junk items from the Northrend daily Bag of Fishing Treasures – A Fantasy Portrait (pictured below) and Blank Slate (thanks Huenninjarin).
• Level 70 requirement on fishing gear from that bag (Weather-Beaten Fishing Hat and poles), to stop “twinks” using them.

• Never catch junk from pools. Fish any pool successfully with skill 1.
• Kalu’ak Fishing Derby, Saturdays 14:00. Read strategies (or contribute).
• Enchant Gloves – Angler, +5 skill. Enchanters’ formula from Indu’le Fishermen, Mystics or Warriors at Lake Indu’le.
• Cooking slightly easier to level near 450 skill.

El’s Anglin’ has been updated. A few other minor changes have been reported (thanks).