llen changed into her bathing suit； saying； 〃Honestly； I don't know how I'm going to get this weight off。〃
〃You look great； hon。〃 Actually； he felt that she was too thin； but he had learned not to mention that。
Tina was already running down the beach。
〃Don't forget you need your sunscreen；〃 Ellen called。
〃Later；〃 Tina shouted； over her shoulder。 〃I'm going to see if there's a sloth。
Ellen Bowman looked around at the beach； and the trees。 〃You think she's all right？〃
〃Honey； there's nobody here for miles；〃 Mike said。
〃What about snakes？〃
〃Oh； for God's sake；〃 Mike Bowman said。 〃There's no snakes on a beach。〃
〃Well； there might be。 。 。 。〃
〃Honey；〃 he said firmly。 〃Snakes are cold…blooded。 They're reptiles。 They can't control their body temperature。 It's ninety degrees on that sand。 If a snake came out； it'd be cooked。 Believe me。 There's no snakes on the beach。〃 He watched his daughter scampering down the beach； a dark spot on the white sand。 〃Let her go。 Let her have a good time。〃
He put his arm around his wife's waist。
Tina ran until she was exhausted； and then she threw herself down on the sand and gleefully rolled to the water's edge。 The ocean was warm； and there was hardly any surf at all。 She sat for a while； catching her breath； and then she looked back toward her parents and the car； to see how far she had e。
Her mother waved； beckoning her to return。 Tina waved back cheerfully； pretending she didn't understand。 Tina didn't want to put sunscreen on。 And she didn't want to go back and hear her mother talk about losing weight。 She wanted to stay right here； and maybe see a sloth。
Tina had seen a sloth two days earlier at the zoo in San José。 It looked like a Muppets character； and it seemed harmless。 In any case； it couldn't move fast； she could easily outrun it。
Now her mother was calling to her； and Tina decided to move out of the sun； back from the water； to the shade of the palm trees。 In this part of the beach； the palm trees overhung a gnarled tangle of mangrove roots； which blocked any attempt to penetrate inland。 Tina sat in the sand and kicked the dried mangrove leaves。 She noticed many bird tracks in the sand。 Costa Rica was famous for its birds。 The guidebooks said there were three times as many birds in Costa Rica as in all of America and Canada。
In the sand； some of the three…toed bird tracks were small； and so faint they could hardly be seen。 Other tracks were large； and cut deeper in the sand。 Tina was looking idly at the tracks when she heard a chirping； followed by a rustling in the mangrove thicket。
Did sloths make a chirping sound？ Tina didn't think so； but she wasn't sure。 The chirping was probably some ocean bird。 She waited quietly； not moving； hearing the rustling again； and finally she saw the source of the sounds； A few yards away； a lizard emerged from the mangrove roots and peered at her。
Tina held her breath。 A new animal for her list！ The lizard stood up on its hind legs； balancing on its thick tail； and stared at her。 Standing like that； it was almost a foot tall； dark green with brown stripes along its back。 Its tiny front legs ended in little lizard fingers that wiggled in the air。 The lizard cocked its head as it looked at her。
Tina thought it was cute。 Sort of like a big salamander。 She raised her hand and wiggled her fingers back。
The lizard wasn't frightened。 It came toward her； walking upright on its hind legs。 It was hardly bigger than a chicken； and like a chicken it bobbed its head as it walked。 Tina thought it would make a wonderful pet。
She noticed that the lizard left three…toed tracks that looked exactly like bird tracks。 The lizard came closer to Tina。 She kept her body still； not wanting to frighten the little animal。 She was amazed that it would e so close； but she remembered that this was a national park。 All the animals in the park would know that they were protected。 This lizard was probably tame。 Maybe it even expected her to give it some food。 Unfortunately she didn't have any。 Slowly； Tina extended her hand； palm open； to show she didn't have any food。
The lizard paused； cocked his head； and chirped。
〃Sorry；〃 Tina said。 〃I just don't have anything。〃
And then； without warning； the lizard jumped up onto her outstretched hand。 Tina could feel its little toes pinching the skin of her palm； and she felt the surprising weight of the animal's body pressing her arm down。
And then the lizard scrambled up her arm； toward her face。
〃I just wish I could see her；〃 Ellen Bowman said； squinting in the sunlight。 〃That's all。 Just see her。〃
〃I'm sure she's fine；〃 Mike said； picking through the box lunch packed by the hotel。 There was unappetizing grilled chicken； and some kind of a meat…filled pastry。 Not that Ellen would cat any of it。
〃You don't think she'd leave the beach？〃 Ellen said。
〃No； hon； I don't。〃
〃I feel so isolated here；〃 Ellen said。
〃I thought that's what you wanted；〃 Mike Bowman said。
〃I did。〃
〃Well； then； what's the problem？〃
〃I just wish I could see her； is all；〃 Ellen said。
Then； from down the beach； carried by the wind； they heard their daughter's voice。 She was screaming。
Puntarenas
〃I think she is quite fortable now；〃 Dr。 Cruz said； lowering the plastic flap of the oxygen tent around Tina as she slept。 Mike Bowman sat beside the bed； close to his daughter。 Mike thought Dr。 Cruz was probably pretty capable； he spoke excellent English； the result of training at medical centers In London and Baltimore。 Dr。 Cruz radiated petence； and the Clínica Santa María； the modern hospital in Puntarenas； was spotless and efficient。
But； even so； Mike Bowman felt nervous。 There was no getting around the fact that his only daughter was desperately ill； and they were far from home。
When Mike had first reached Tina； she was screaming hysterically。 Her whole left arm was bloody； covered with a profusion of small bites； each the size of a thumbprint。 And there were flecks of sticky foam on her arm； like a foamy saliva。
He carried her back down the beach。 Almost immediately her arm began to redden and swell。 Mike would not soon forget the frantic drive back to civilization； the four…wheel…drive Land Rover slipping and sliding up the muddy track into the hills； while his daughter screamed in fear and pain； and her arm grew more bloated and red。 Long before they reached the park boundaries； the swelling had spread to her neck； and then Tina began to have trouble breathing。 。 。 。
〃She'll be all right now？〃 Ellen said； staring through the plastic oxygen tent。
〃I believe so；〃 Dr。 Cruz said。 〃I have given her another dose of steroids； and her breathing is much easier。 And you can see the edema in her arm is greatly reduced。〃
Mike Bowman said； 〃About those bites。 。 。〃
〃We have no identification yet；〃 the doctor said。 〃I myself haven't seen bites like that before。 But you'll notice they are disappearing。 It's already quite difficult to make them out。 Fortunately I have taken photographs for reference。 And I have washed her arm to collect some samples of the sticky saliva…one for analysis here； a second to send to the labs in San José； and the third we will keep frozen in case it is needed。 Do you have the picture she made？〃
〃Yes；〃 Mike Bowman said。 He handed the doctor the sketch that Tina had drawn； in response to questions from the admitting officials。
〃This is the animal that bit her？〃 Dr。 Cruz said； looking at the picture。
〃Yes；〃 Mike Bowman said。 〃She said it was a green lizard； the size of a chicken or a crow。〃
〃I don't know of such a lizard；〃 the doctor said。 〃She has drawn it standing on its hind legs。 。 。 。〃
〃That's right；〃 Mike Bowman said。 〃She said it walked on its hind legs。〃
Dr。 Cruz frowned。 He stared at the picture a while longer。 〃I am not an expert。 I've asked for Dr。 Guitierrez to visit us here。 He is a senior researcher at the Reserva Biológica de Carara； which is across the bay。 Perhaps he can identify the animal for us。〃
〃Isn't there someone from Cabo Blanco？〃 Bowman asked。 〃That's where she was bitten。〃
〃Unfortunately not；〃 D