Matt Phillips denied Barnsley a first away win since January as 10-man Blackpool kept their Championship play-off hopes alive.
Keith Southern was dismissed early in the first half for a careless two-footed lunge on Stephen Foster, but Blackpool still dominated throughout.
However, Barnsley went ahead when David Perkins poked in from close range.
Blackpool failed to lie down and Phillips finished off a flowing move to keep them in fifth place.
Ian Holloway's men might even have nicked all three points if not for Ian Evatt's poor effort five minutes from time, but Barnsley held on to halt a run of seven consecutive away defeats.
Phillips had already skimmed the crossbar with a volley before Southern was sent off by referee Andy D'Urso for a late challenge.
Blackpool continued to press and Tom Ince and Phillips both went close to opening the scoring.
But Perkins put Barnsley ahead when Reuben Noble-Lazarus picked out Jim O'Brien, and when his low ball in bounced around the goalmouth Perkins turned it in.
Phillips finally levelled when he collected Bob Harris's defence-splitting pass to slot comfortably past David Button.
Barnsley were able to ride out four minutes of injury-time to claim a valuable point in their quest to secure Championship football.
Blackpool manager Ian Holloway: "I am absolutely devastated with the sending off to be honest. I felt there were two people in that challenge.
"My player put one foot in and the other put two in. I have seen it four times from a few different angles and my disgust at the decision won't change.
"I don't think it matters who gets there first in the tackle. It's the intent and the purpose and two-footed is much worse than one footed and that's why Keith is aggrieved.
"He went in fairly to win the ball. I wouldn't have a problem if both men had been sent off but the referees need help and it isn't human help that they need.
"They have a monitor to look at and they should be able to use it to make decisions."
Barnsley boss Keith Hill: "It's essential that we stay in the Championship and results like this, regardless of the performance, give us a great chance of doing that.
"We need to firm up our status and I want to put this season firmly into room 101 and then move on to next season.
"We didn't play the type of football that I want to play. We had a lack of culture and a lack of composure at times."
Live Text Commentary
Full Time The game is over, as the referee blows his whistle.90:00 +3:42
Centre by Nouha Dicko, clearance made by Rob Edwards.90:00 +2:35
The official flags Matt Phillips offside. David Button takes the free kick.90:00 +1:56
David Cotterill takes a shot. Matthew Gilks makes a save.90:00 +0:52
Kallum Higginbotham takes the outswinging corner, Alex Baptiste manages to make a clearance.90:00 +0:24
Corner taken right-footed by David Cotterill to the near post, Matt Phillips manages to make a clearance.89:15
Robert Harris restarts play with the free kick.89:15 Booking
Booking Jimmy McNulty booked for unsporting behaviour.89:02
Free kick awarded for an unfair challenge on Ludovic Sylvestre by Jimmy McNulty.87:32 Substitution
Substitution Stephen Dobbie goes off and Ludovic Sylvestre comes on.86:54
Corner taken left-footed by Thomas Ince, Close range strike by Ian Evatt goes over the bar.85:20
Corner taken by Matt Phillips, save made by David Button.84:26 Substitution
Substitution Kallum Higginbotham replaces Michael Tonge.82:28
Scott Wiseman takes a shot. Save by Matthew Gilks.80:39
Direct free kick taken by Robert Harris.80:39 Booking
Booking The referee books Michael Tonge for unsporting behaviour.80:19
Free kick awarded for a foul by Michael Tonge on Thomas Ince.78:47
The assistant referee flags for offside against Craig Davies. Ian Evatt restarts play with the free kick.77:28
Shot from just outside the area by Jimmy McNulty goes over the bar.75:47 Substitution
Substitution Craig Davies comes on in place of Frank Nouble.
Substitution David Cotterill on for Reuben Noble-Lazarus.74:27
Stephen Dobbie fouled by Jimmy McNulty, the ref awards a free kick. Neal Eardley takes the direct free kick.73:57
Shot from just outside the penalty box by Jim O'Brien misses to the left of the target.73:36
Michael Tonge decides to take a short corner.73:11
Unfair challenge on Reuben Noble-Lazarus by Barry Ferguson results in a free kick. David Perkins takes the free kick.71:46 Substitution
Substitution (Blackpool) makes a substitution, with Nouha Dicko coming on for Martinez Angel.70:42
Assist by Robert Harris.70:42 Goal scored
Goal! - Matt Phillips - Blackpool 1 - 1 Barnsley Goal scored by Matt Phillips from close in to the bottom left corner of the goal. Blackpool 1-1 Barnsley.70:39
Robert Harris delivers the ball,69:16
Unfair challenge on Martinez Angel by Jimmy McNulty results in a free kick. Matthew Gilks takes the direct free kick.68:23
Jimmy McNulty fouled by Barry Ferguson, the ref awards a free kick. Jimmy McNulty takes the free kick.68:04
The ball is swung over by Frank Nouble.66:02
Header from deep inside the area by Robert Harris goes over the bar.65:39
Inswinging corner taken by Matt Phillips from the left by-line, David Button makes a save.64:58
Corner taken left-footed by Thomas Ince from the right by-line, Jim O'Brien manages to make a clearance.64:50
A cross is delivered by Matt Phillips, clearance by Jimmy McNulty.62:55
Thomas Ince takes a shot. Stephen Foster gets a block in.61:20
Corner taken by Reuben Noble-Lazarus from the right by-line to the near post, clearance made by Matt Phillips.61:00
Michael Tonge takes a shot. Matthew Gilks makes a save.59:22
The ball is crossed by Lee Collins.58:51
Jim O'Brien crosses the ball, Neal Eardley manages to make a clearance.57:59
Shot from just outside the penalty area by Thomas Ince misses to the left of the target.57:09
The ball is sent over by Michael Tonge, save by Matthew Gilks.55:07 Substitution
Substitution Barry Ferguson comes on in place of Lomana Tresor LuaLua.54:18
The assistant referee signals for offside against Frank Nouble. Alex Baptiste restarts play with the free kick.50:49
Matt Phillips fouled by Lee Collins, the ref awards a free kick. Martinez Angel takes the free kick.49:43
Effort from the edge of the area by Ian Evatt goes wide of the right-hand post.49:20
Matt Phillips takes a inswinging corner to the near post, clearance made by Frank Nouble.49:08
Martinez Angel takes a shot. Save by David Button.48:15
David Perkins concedes a free kick for a foul on Thomas Ince. Martinez Angel takes the direct free kick.47:51
Reuben Noble-Lazarus is caught offside. Matthew Gilks takes the free kick.46:45
The assist for the goal came from Jim O'Brien.46:45 Goal scored
Goal! - David Perkins - Blackpool 0 - 1 Barnsley A goal is scored by David Perkins from inside the penalty area to the top right corner of the goal. Blackpool 0-1 Barnsley.46:04
Reuben Noble-Lazarus produces a cross, Jim O'Brien takes a shot. Blocked by David Perkins.45:01
The second half kicks off.45:00 +1:41 Half time
Half Time The ref blows to end the first period.45:00 +1:06
The ball is swung over by Matt Phillips.45:00 +0:29
Inswinging corner taken by Michael Tonge from the left by-line played to the near post, clearance made by Martinez Angel.45:00 +0:23
The ball is crossed by Michael Tonge, blocked by Neal Eardley.43:50
Corner taken by Reuben Noble-Lazarus from the right by-line, clearance made by Alex Baptiste.43:42
Frank Nouble crosses the ball, clearance by Ian Evatt.43:21
A cross is delivered by Stephen Dobbie, Lee Collins manages to make a clearance.43:13
A cross is delivered by Neal Eardley, clearance by David Perkins.43:06
Robert Harris delivers the ball.42:20
Jim O'Brien delivers the ball, save by Matthew Gilks.42:02
Free kick awarded for an unfair challenge on Lee Collins by Thomas Ince. Direct free kick taken by Lee Collins.41:37
The ball is delivered by Scott Wiseman, Matthew Gilks makes a save.41:32
The ball is delivered by Jim O'Brien, blocked by Robert Harris.39:00
Stephen Dobbie produces a right-footed shot from just outside the area that goes harmlessly over the bar.36:34
Free kick awarded for a foul by Rob Edwards on Thomas Ince. Neal Eardley takes the free kick.36:26
Lee Collins sends in a cross, clearance by Robert Harris.35:14
Inswinging corner taken right-footed by Matt Phillips from the left by-line, save by David Button.35:05
Matt Phillips takes a shot. Save by David Button.34:53
Matt Phillips takes a shot. Blocked by Stephen Foster.34:17
The ball is sent over by Frank Nouble.33:10
Long range shot by Lomana Tresor LuaLua goes wide right of the target.31:46
Jim O'Brien fouled by Ian Evatt, the ref awards a free kick. The free kick is swung in left-footed by Reuben Noble-Lazarus, Alex Baptiste makes a clearance.30:45
Unfair challenge on Thomas Ince by Rob Edwards results in a free kick. Neal Eardley takes the free kick.30:39
Lee Collins produces a cross.26:00
A cross is delivered by Thomas Ince, clearance made by Jimmy McNulty.25:18
Effort from the edge of the area by Thomas Ince goes wide of the right-hand upright.24:14
Neal Eardley gives away a free kick for an unfair challenge on Reuben Noble-Lazarus. Michael Tonge delivers the ball from the free kick right-footed from left wing.22:59
Lomana Tresor LuaLua is caught offside. David Button restarts play with the free kick.20:21
Direct free kick taken by David Button.20:21 Dismissal
Dismissal Keith Southern dismissed for professional foul.20:10
Free kick awarded for an unfair challenge on Stephen Foster by Keith Southern.18:34
Thomas Ince is flagged offside by the assistant referee. David Button takes the free kick.16:38
Effort on goal by Matt Phillips from long range goes over the bar.11:58
Free kick awarded for a foul by Keith Southern on David Perkins. Direct free kick taken by Jimmy McNulty.10:47
Frank Nouble gives away a free kick for an unfair challenge on Alex Baptiste. Alex Baptiste restarts play with the free kick.10:03
Matt Phillips produces a right-footed shot from inside the area that clears the bar.9:07
The referee blows for offside against Jim O'Brien. Free kick taken by Matthew Gilks.7:06
A cross is delivered by Matt Phillips, Shot by Lomana Tresor LuaLua. Save made by David Button.6:09
Unfair challenge on Stephen Dobbie by Jimmy McNulty results in a free kick. Free kick crossed left-footed by Thomas Ince, save made by David Button.3:50
Michael Tonge takes a shot. Save by Matthew Gilks.3:22
Foul by Lomana Tresor LuaLua on Jimmy McNulty, free kick awarded. Rob Edwards restarts play with the free kick.2:41
The ball is crossed by Jim O'Brien, clearance made by Alex Baptiste.0:00
The game gets underway.
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